| Name | airsmodel JSON |
| Version |
0.5.14
JSON |
| download |
| home_page | None |
| Summary | ARLAS Item Registration Service Model |
| upload_time | 2024-12-20 06:59:55 |
| maintainer | None |
| docs_url | None |
| author | Gisaïa |
| requires_python | >=3.11 |
| license | None |
| keywords |
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| requirements |
No requirements were recorded.
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# AIRS Model
This package contains the data model for sending requests to ARLAS Item Registration Services.
## Item Schema
```txt
airs_model
```
| Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Access Restrictions | Defined In |
| :------------------ | :--------- | :------------- | :----------- | :---------------- | :-------------------- | :------------------ | :------------------------------------------------------------ |
| Can be instantiated | No | Unknown status | No | Forbidden | Allowed | none | [model.schema.json](model.schema.json "open original schema") |
### Item Type
`object` ([Item](model.md))
## Item Properties
| Property | Type | Required | Nullable | Defined by |
| :------------------------ | :----- | :------- | :------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [collection](#collection) | Merged | Optional | cannot be null | [Item](model-properties-name-of-the-collection-the-item-belongs-to.md "airs_model#/properties/collection") |
| [catalog](#catalog) | Merged | Optional | cannot be null | [Item](model-properties-name-of-the-catalog-the-item-belongs-to.md "airs_model#/properties/catalog") |
| [id](#id) | Merged | Optional | cannot be null | [Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md "airs_model#/properties/id") |
| [geometry](#geometry) | Merged | Optional | cannot be null | [Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md "airs_model#/properties/geometry") |
| [bbox](#bbox) | Merged | Optional | cannot be null | [Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md "airs_model#/properties/bbox") |
| [centroid](#centroid) | Merged | Optional | cannot be null | [Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md "airs_model#/properties/centroid") |
| [assets](#assets) | Merged | Optional | cannot be null | [Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md "airs_model#/properties/assets") |
| [properties](#properties) | Merged | Optional | cannot be null | [Item](model-properties-item-properties.md "airs_model#/properties/properties") |
| Additional Properties | Any | Optional | can be null | |
### collection
`collection`
* is optional
* Type: merged type ([Name of the collection the item belongs to.](model-properties-name-of-the-collection-the-item-belongs-to.md))
* cannot be null
* defined in: [Item](model-properties-name-of-the-collection-the-item-belongs-to.md "airs_model#/properties/collection")
#### collection Type
merged type ([Name of the collection the item belongs to.](model-properties-name-of-the-collection-the-item-belongs-to.md))
any of
* [Untitled string in Item](model-properties-name-of-the-collection-the-item-belongs-to-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-name-of-the-collection-the-item-belongs-to-anyof-1.md "check type definition")
### catalog
`catalog`
* is optional
* Type: merged type ([Name of the catalog the item belongs to.](model-properties-name-of-the-catalog-the-item-belongs-to.md))
* cannot be null
* defined in: [Item](model-properties-name-of-the-catalog-the-item-belongs-to.md "airs_model#/properties/catalog")
#### catalog Type
merged type ([Name of the catalog the item belongs to.](model-properties-name-of-the-catalog-the-item-belongs-to.md))
any of
* [Untitled string in Item](model-properties-name-of-the-catalog-the-item-belongs-to-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-name-of-the-catalog-the-item-belongs-to-anyof-1.md "check type definition")
### id
`id`
* is optional
* Type: merged type ([Unique item identifier. Must be unique within the collection.](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md))
* cannot be null
* defined in: [Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md "airs_model#/properties/id")
#### id Type
merged type ([Unique item identifier. Must be unique within the collection.](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md))
any of
* [Untitled string in Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection-anyof-1.md "check type definition")
### geometry
`geometry`
* is optional
* Type: merged type ([Defines the full footprint of the asset represented by this item, formatted according to \`RFC 7946, section 3.1 (GeoJSON) \<https://tools.ietf.org/html/rfc7946>\`\_](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md))
* cannot be null
* defined in: [Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md "airs_model#/properties/geometry")
#### geometry Type
merged type ([Defines the full footprint of the asset represented by this item, formatted according to \`RFC 7946, section 3.1 (GeoJSON) \<https://tools.ietf.org/html/rfc7946>\`\_](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md))
any of
* [Untitled object in Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_-anyof-1.md "check type definition")
### bbox
`bbox`
* is optional
* Type: merged type ([Bounding Box of the asset represented by this item using either 2D or 3D geometries. The length of the array must be 2\*n where n is the number of dimensions. Could also be None in the case of a null geometry.](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md))
* cannot be null
* defined in: [Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md "airs_model#/properties/bbox")
#### bbox Type
merged type ([Bounding Box of the asset represented by this item using either 2D or 3D geometries. The length of the array must be 2\*n where n is the number of dimensions. Could also be None in the case of a null geometry.](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md))
any of
* [Untitled array in Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry-anyof-1.md "check type definition")
### centroid
`centroid`
* is optional
* Type: merged type ([Coordinates (lon/lat) of the geometry's centroid.](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md))
* cannot be null
* defined in: [Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md "airs_model#/properties/centroid")
#### centroid Type
merged type ([Coordinates (lon/lat) of the geometry's centroid.](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md))
any of
* [Untitled array in Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid-anyof-1.md "check type definition")
### assets
`assets`
* is optional
* Type: merged type ([A dictionary mapping string keys to Asset objects. All Asset values in the dictionary will have their owner attribute set to the created Item.](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md))
* cannot be null
* defined in: [Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md "airs_model#/properties/assets")
#### assets Type
merged type ([A dictionary mapping string keys to Asset objects. All Asset values in the dictionary will have their owner attribute set to the created Item.](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md))
any of
* [Untitled object in Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item-anyof-1.md "check type definition")
### properties
`properties`
* is optional
* Type: merged type ([Item properties](model-properties-item-properties.md))
* cannot be null
* defined in: [Item](model-properties-item-properties.md "airs_model#/properties/properties")
#### properties Type
merged type ([Item properties](model-properties-item-properties.md))
any of
* [Properties](model-defs-properties.md "check type definition")
* [Untitled null in Item](model-properties-item-properties-anyof-1.md "check type definition")
### Additional Properties
Additional properties are allowed and do not have to follow a specific schema
## Item Definitions
### Definitions group Asset
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Asset"}
```
| Property | Type | Required | Nullable | Defined by |
| :---------------------------------------------------------------- | :----- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [name](#name) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md "airs_model#/$defs/Asset/properties/name") |
| [size](#size) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-assets-size-in-bytes.md "airs_model#/$defs/Asset/properties/size") |
| [href](#href) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-absolute-link-to-the-asset-object.md "airs_model#/$defs/Asset/properties/href") |
| [asset\_type](#asset_type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-type-of-data-resourcetype.md "airs_model#/$defs/Asset/properties/asset_type") |
| [asset\_format](#asset_format) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-data-format-assetformat.md "airs_model#/$defs/Asset/properties/asset_format") |
| [storage\_\_requester\_pays](#storage__requester_pays) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md "airs_model#/$defs/Asset/properties/storage__requester_pays") |
| [storage\_\_tier](#storage__tier) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md "airs_model#/$defs/Asset/properties/storage__tier") |
| [storage\_\_platform](#storage__platform) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md "airs_model#/$defs/Asset/properties/storage__platform") |
| [storage\_\_region](#storage__region) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md "airs_model#/$defs/Asset/properties/storage__region") |
| [airs\_\_managed](#airs__managed) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md "airs_model#/$defs/Asset/properties/airs__managed") |
| [airs\_\_object\_store\_bucket](#airs__object_store_bucket) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md "airs_model#/$defs/Asset/properties/airs__object_store_bucket") |
| [airs\_\_object\_store\_key](#airs__object_store_key) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-object-store-key-of-the-asset-object.md "airs_model#/$defs/Asset/properties/airs__object_store_key") |
| [title](#title) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md "airs_model#/$defs/Asset/properties/title") |
| [description](#description) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md "airs_model#/$defs/Asset/properties/description") |
| [type](#type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md "airs_model#/$defs/Asset/properties/type") |
| [roles](#roles) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md "airs_model#/$defs/Asset/properties/roles") |
| [extra\_fields](#extra_fields) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md "airs_model#/$defs/Asset/properties/extra_fields") |
| [gsd](#gsd) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md "airs_model#/$defs/Asset/properties/gsd") |
| [eo\_\_bands](#eo__bands) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md "airs_model#/$defs/Asset/properties/eo__bands") |
| [sar\_\_instrument\_mode](#sar__instrument_mode) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md "airs_model#/$defs/Asset/properties/sar__instrument_mode") |
| [sar\_\_frequency\_band](#sar__frequency_band) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md "airs_model#/$defs/Asset/properties/sar__frequency_band") |
| [sar\_\_center\_frequency](#sar__center_frequency) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md "airs_model#/$defs/Asset/properties/sar__center_frequency") |
| [sar\_\_polarizations](#sar__polarizations) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-any-combination-of-polarizations.md "airs_model#/$defs/Asset/properties/sar__polarizations") |
| [sar\_\_product\_type](#sar__product_type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md "airs_model#/$defs/Asset/properties/sar__product_type") |
| [sar\_\_resolution\_range](#sar__resolution_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Asset/properties/sar__resolution_range") |
| [sar\_\_resolution\_azimuth](#sar__resolution_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Asset/properties/sar__resolution_azimuth") |
| [sar\_\_pixel\_spacing\_range](#sar__pixel_spacing_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Asset/properties/sar__pixel_spacing_range") |
| [sar\_\_pixel\_spacing\_azimuth](#sar__pixel_spacing_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Asset/properties/sar__pixel_spacing_azimuth") |
| [sar\_\_looks\_range](#sar__looks_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md "airs_model#/$defs/Asset/properties/sar__looks_range") |
| [sar\_\_looks\_azimuth](#sar__looks_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md "airs_model#/$defs/Asset/properties/sar__looks_azimuth") |
| [sar\_\_looks\_equivalent\_number](#sar__looks_equivalent_number) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md "airs_model#/$defs/Asset/properties/sar__looks_equivalent_number") |
| [sar\_\_observation\_direction](#sar__observation_direction) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md "airs_model#/$defs/Asset/properties/sar__observation_direction") |
| [proj\_\_epsg](#proj__epsg) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-epsg-code-of-the-datasource.md "airs_model#/$defs/Asset/properties/proj__epsg") |
| [proj\_\_wkt2](#proj__wkt2) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md "airs_model#/$defs/Asset/properties/proj__wkt2") |
| [proj\_\_geometry](#proj__geometry) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-defines-the-footprint-of-this-item.md "airs_model#/$defs/Asset/properties/proj__geometry") |
| [proj\_\_bbox](#proj__bbox) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md "airs_model#/$defs/Asset/properties/proj__bbox") |
| [proj\_\_centroid](#proj__centroid) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md "airs_model#/$defs/Asset/properties/proj__centroid") |
| [proj\_\_shape](#proj__shape) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md "airs_model#/$defs/Asset/properties/proj__shape") |
| [proj\_\_transform](#proj__transform) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md "airs_model#/$defs/Asset/properties/proj__transform") |
| Additional Properties | Any | Optional | can be null | |
#### name
`name`
* is optional
* Type: merged type ([Asset's name. But be the same as the key in the \`assets\` dictionary.](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md "airs_model#/$defs/Asset/properties/name")
##### name Type
merged type ([Asset's name. But be the same as the key in the \`assets\` dictionary.](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md))
any of
* [Untitled string in Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary-anyof-1.md "check type definition")
#### size
`size`
* is optional
* Type: merged type ([Asset's size in Bytes.](model-defs-asset-properties-assets-size-in-bytes.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-assets-size-in-bytes.md "airs_model#/$defs/Asset/properties/size")
##### size Type
merged type ([Asset's size in Bytes.](model-defs-asset-properties-assets-size-in-bytes.md))
any of
* [Untitled integer in Item](model-defs-asset-properties-assets-size-in-bytes-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-assets-size-in-bytes-anyof-1.md "check type definition")
#### href
`href`
* is optional
* Type: merged type ([Absolute link to the asset object.](model-defs-asset-properties-absolute-link-to-the-asset-object.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-absolute-link-to-the-asset-object.md "airs_model#/$defs/Asset/properties/href")
##### href Type
merged type ([Absolute link to the asset object.](model-defs-asset-properties-absolute-link-to-the-asset-object.md))
any of
* [Untitled string in Item](model-defs-asset-properties-absolute-link-to-the-asset-object-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-absolute-link-to-the-asset-object-anyof-1.md "check type definition")
#### asset\_type
`asset_type`
* is optional
* Type: merged type ([Type of data (ResourceType)](model-defs-asset-properties-type-of-data-resourcetype.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-type-of-data-resourcetype.md "airs_model#/$defs/Asset/properties/asset_type")
##### asset\_type Type
merged type ([Type of data (ResourceType)](model-defs-asset-properties-type-of-data-resourcetype.md))
any of
* [Untitled string in Item](model-defs-asset-properties-type-of-data-resourcetype-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-type-of-data-resourcetype-anyof-1.md "check type definition")
#### asset\_format
`asset_format`
* is optional
* Type: merged type ([Data format (AssetFormat)](model-defs-asset-properties-data-format-assetformat.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-data-format-assetformat.md "airs_model#/$defs/Asset/properties/asset_format")
##### asset\_format Type
merged type ([Data format (AssetFormat)](model-defs-asset-properties-data-format-assetformat.md))
any of
* [Untitled string in Item](model-defs-asset-properties-data-format-assetformat-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-data-format-assetformat-anyof-1.md "check type definition")
#### storage\_\_requester\_pays
`storage__requester_pays`
* is optional
* Type: merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md "airs_model#/$defs/Asset/properties/storage__requester_pays")
##### storage\_\_requester\_pays Type
merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))
any of
* [Untitled boolean in Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-1.md "check type definition")
#### storage\_\_tier
`storage__tier`
* is optional
* Type: merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md "airs_model#/$defs/Asset/properties/storage__tier")
##### storage\_\_tier Type
merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))
any of
* [Untitled string in Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-1.md "check type definition")
#### storage\_\_platform
`storage__platform`
* is optional
* Type: merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md "airs_model#/$defs/Asset/properties/storage__platform")
##### storage\_\_platform Type
merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))
any of
* [Untitled string in Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-1.md "check type definition")
#### storage\_\_region
`storage__region`
* is optional
* Type: merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md "airs_model#/$defs/Asset/properties/storage__region")
##### storage\_\_region Type
merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))
any of
* [Untitled string in Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-1.md "check type definition")
#### airs\_\_managed
`airs__managed`
* is optional
* Type: merged type ([Whether the asset is managed by AIRS or not.](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md "airs_model#/$defs/Asset/properties/airs__managed")
##### airs\_\_managed Type
merged type ([Whether the asset is managed by AIRS or not.](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md))
any of
* [Untitled boolean in Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not-anyof-1.md "check type definition")
##### airs\_\_managed Default Value
The default value is:
```json
true
```
#### airs\_\_object\_store\_bucket
`airs__object_store_bucket`
* is optional
* Type: merged type ([Object store bucket for the asset object.](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md "airs_model#/$defs/Asset/properties/airs__object_store_bucket")
##### airs\_\_object\_store\_bucket Type
merged type ([Object store bucket for the asset object.](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md))
any of
* [Untitled string in Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object-anyof-1.md "check type definition")
#### airs\_\_object\_store\_key
`airs__object_store_key`
* is optional
* Type: merged type ([Object store key of the asset object.](model-defs-asset-properties-object-store-key-of-the-asset-object.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-object-store-key-of-the-asset-object.md "airs_model#/$defs/Asset/properties/airs__object_store_key")
##### airs\_\_object\_store\_key Type
merged type ([Object store key of the asset object.](model-defs-asset-properties-object-store-key-of-the-asset-object.md))
any of
* [Untitled string in Item](model-defs-asset-properties-object-store-key-of-the-asset-object-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-object-store-key-of-the-asset-object-anyof-1.md "check type definition")
#### title
`title`
* is optional
* Type: merged type ([Optional displayed title for clients and users.](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md "airs_model#/$defs/Asset/properties/title")
##### title Type
merged type ([Optional displayed title for clients and users.](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md))
any of
* [Untitled string in Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users-anyof-1.md "check type definition")
#### description
`description`
* is optional
* Type: merged type ([A description of the Asset providing additional details, such as how it was processed or created. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md "airs_model#/$defs/Asset/properties/description")
##### description Type
merged type ([A description of the Asset providing additional details, such as how it was processed or created. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))
any of
* [Untitled string in Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-1.md "check type definition")
#### type
`type`
* is optional
* Type: merged type ([Optional description of the media type. Registered Media Types are preferred. See MediaType for common media types.](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md "airs_model#/$defs/Asset/properties/type")
##### type Type
merged type ([Optional description of the media type. Registered Media Types are preferred. See MediaType for common media types.](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md))
any of
* [Untitled string in Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types-anyof-1.md "check type definition")
#### roles
`roles`
* is optional
* Type: merged type ([Optional, Semantic roles (i.e. thumbnail, overview, data, metadata) of the asset.](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md "airs_model#/$defs/Asset/properties/roles")
##### roles Type
merged type ([Optional, Semantic roles (i.e. thumbnail, overview, data, metadata) of the asset.](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md))
any of
* [Untitled array in Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset-anyof-1.md "check type definition")
#### extra\_fields
`extra_fields`
* is optional
* Type: merged type ([Optional, additional fields for this asset. This is used by extensions as a way to serialize and deserialize properties on asset object JSON.](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md "airs_model#/$defs/Asset/properties/extra_fields")
##### extra\_fields Type
merged type ([Optional, additional fields for this asset. This is used by extensions as a way to serialize and deserialize properties on asset object JSON.](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md))
any of
* [Untitled object in Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json-anyof-1.md "check type definition")
#### gsd
`gsd`
* is optional
* Type: merged type ([Ground Sampling Distance (resolution) of the asset](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md "airs_model#/$defs/Asset/properties/gsd")
##### gsd Type
merged type ([Ground Sampling Distance (resolution) of the asset](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md))
any of
* [Untitled number in Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset-anyof-1.md "check type definition")
#### eo\_\_bands
`eo__bands`
* is optional
* Type: merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md "airs_model#/$defs/Asset/properties/eo__bands")
##### eo\_\_bands Type
merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))
any of
* [Untitled array in Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-1.md "check type definition")
#### sar\_\_instrument\_mode
`sar__instrument_mode`
* is optional
* Type: merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for "Wave mode" of Sentinel-1 and Envisat ASAR satellites.](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md "airs_model#/$defs/Asset/properties/sar__instrument_mode")
##### sar\_\_instrument\_mode Type
merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for "Wave mode" of Sentinel-1 and Envisat ASAR satellites.](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))
any of
* [Untitled string in Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-1.md "check type definition")
#### sar\_\_frequency\_band
`sar__frequency_band`
* is optional
* Type: merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section "Common Frequency Band Names" for a list of accepted names.](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md "airs_model#/$defs/Asset/properties/sar__frequency_band")
##### sar\_\_frequency\_band Type
merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section "Common Frequency Band Names" for a list of accepted names.](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))
any of
* [Untitled string in Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-1.md "check type definition")
#### sar\_\_center\_frequency
`sar__center_frequency`
* is optional
* Type: merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md "airs_model#/$defs/Asset/properties/sar__center_frequency")
##### sar\_\_center\_frequency Type
merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-1.md "check type definition")
#### sar\_\_polarizations
`sar__polarizations`
* is optional
* Type: merged type ([Any combination of polarizations.](model-defs-asset-properties-any-combination-of-polarizations.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-any-combination-of-polarizations.md "airs_model#/$defs/Asset/properties/sar__polarizations")
##### sar\_\_polarizations Type
merged type ([Any combination of polarizations.](model-defs-asset-properties-any-combination-of-polarizations.md))
any of
* [Untitled string in Item](model-defs-asset-properties-any-combination-of-polarizations-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-any-combination-of-polarizations-anyof-1.md "check type definition")
#### sar\_\_product\_type
`sar__product_type`
* is optional
* Type: merged type ([The product type, for example SSC, MGD, or SGC](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md "airs_model#/$defs/Asset/properties/sar__product_type")
##### sar\_\_product\_type Type
merged type ([The product type, for example SSC, MGD, or SGC](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))
any of
* [Untitled string in Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-1.md "check type definition")
#### sar\_\_resolution\_range
`sar__resolution_range`
* is optional
* Type: merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Asset/properties/sar__resolution_range")
##### sar\_\_resolution\_range Type
merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-1.md "check type definition")
#### sar\_\_resolution\_azimuth
`sar__resolution_azimuth`
* is optional
* Type: merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Asset/properties/sar__resolution_azimuth")
##### sar\_\_resolution\_azimuth Type
merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-1.md "check type definition")
#### sar\_\_pixel\_spacing\_range
`sar__pixel_spacing_range`
* is optional
* Type: merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Asset/properties/sar__pixel_spacing_range")
##### sar\_\_pixel\_spacing\_range Type
merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md "check type definition")
#### sar\_\_pixel\_spacing\_azimuth
`sar__pixel_spacing_azimuth`
* is optional
* Type: merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Asset/properties/sar__pixel_spacing_azimuth")
##### sar\_\_pixel\_spacing\_azimuth Type
merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md "check type definition")
#### sar\_\_looks\_range
`sar__looks_range`
* is optional
* Type: merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md "airs_model#/$defs/Asset/properties/sar__looks_range")
##### sar\_\_looks\_range Type
merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))
any of
* [Untitled number in Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-1.md "check type definition")
#### sar\_\_looks\_azimuth
`sar__looks_azimuth`
* is optional
* Type: merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md "airs_model#/$defs/Asset/properties/sar__looks_azimuth")
##### sar\_\_looks\_azimuth Type
merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))
any of
* [Untitled number in Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-1.md "check type definition")
#### sar\_\_looks\_equivalent\_number
`sar__looks_equivalent_number`
* is optional
* Type: merged type ([The equivalent number of looks (ENL).](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md "airs_model#/$defs/Asset/properties/sar__looks_equivalent_number")
##### sar\_\_looks\_equivalent\_number Type
merged type ([The equivalent number of looks (ENL).](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md))
any of
* [Untitled number in Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl-anyof-1.md "check type definition")
#### sar\_\_observation\_direction
`sar__observation_direction`
* is optional
* Type: merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md "airs_model#/$defs/Asset/properties/sar__observation_direction")
##### sar\_\_observation\_direction Type
merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))
any of
* [Untitled string in Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-1.md "check type definition")
#### proj\_\_epsg
`proj__epsg`
* is optional
* Type: merged type ([EPSG code of the datasource.](model-defs-asset-properties-epsg-code-of-the-datasource.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-epsg-code-of-the-datasource.md "airs_model#/$defs/Asset/properties/proj__epsg")
##### proj\_\_epsg Type
merged type ([EPSG code of the datasource.](model-defs-asset-properties-epsg-code-of-the-datasource.md))
any of
* [Untitled integer in Item](model-defs-asset-properties-epsg-code-of-the-datasource-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-epsg-code-of-the-datasource-anyof-1.md "check type definition")
#### proj\_\_wkt2
`proj__wkt2`
* is optional
* Type: merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md "airs_model#/$defs/Asset/properties/proj__wkt2")
##### proj\_\_wkt2 Type
merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))
any of
* [Untitled string in Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-1.md "check type definition")
#### proj\_\_geometry
`proj__geometry`
* is optional
* Type: merged type ([Defines the footprint of this Item.](model-defs-asset-properties-defines-the-footprint-of-this-item.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-defines-the-footprint-of-this-item.md "airs_model#/$defs/Asset/properties/proj__geometry")
##### proj\_\_geometry Type
merged type ([Defines the footprint of this Item.](model-defs-asset-properties-defines-the-footprint-of-this-item.md))
any of
* [Untitled undefined type in Item](model-defs-asset-properties-defines-the-footprint-of-this-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-defines-the-footprint-of-this-item-anyof-1.md "check type definition")
#### proj\_\_bbox
`proj__bbox`
* is optional
* Type: merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md "airs_model#/$defs/Asset/properties/proj__bbox")
##### proj\_\_bbox Type
merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))
any of
* [Untitled array in Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-1.md "check type definition")
#### proj\_\_centroid
`proj__centroid`
* is optional
* Type: merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md "airs_model#/$defs/Asset/properties/proj__centroid")
##### proj\_\_centroid Type
merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))
any of
* [Untitled undefined type in Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-1.md "check type definition")
#### proj\_\_shape
`proj__shape`
* is optional
* Type: merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md "airs_model#/$defs/Asset/properties/proj__shape")
##### proj\_\_shape Type
merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))
any of
* [Untitled array in Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-1.md "check type definition")
#### proj\_\_transform
`proj__transform`
* is optional
* Type: merged type ([The affine transformation coefficients for the default grid.](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md))
* cannot be null
* defined in: [Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md "airs_model#/$defs/Asset/properties/proj__transform")
##### proj\_\_transform Type
merged type ([The affine transformation coefficients for the default grid.](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md))
any of
* [Untitled array in Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-1.md "check type definition")
#### Additional Properties
Additional properties are allowed and do not have to follow a specific schema
### Definitions group Band
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Band"}
```
| Property | Type | Required | Nullable | Defined by |
| :--------------------------------------------- | :------- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [name](#name-1) | `string` | Required | cannot be null | [Item](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md "airs_model#/$defs/Band/properties/name") |
| [common\_name](#common_name) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md "airs_model#/$defs/Band/properties/common_name") |
| [description](#description-1) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md "airs_model#/$defs/Band/properties/description") |
| [center\_wavelength](#center_wavelength) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm.md "airs_model#/$defs/Band/properties/center_wavelength") |
| [full\_width\_half\_max](#full_width_half_max) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm.md "airs_model#/$defs/Band/properties/full_width_half_max") |
| [solar\_illumination](#solar_illumination) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md "airs_model#/$defs/Band/properties/solar_illumination") |
| [quality\_indicators](#quality_indicators) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md "airs_model#/$defs/Band/properties/quality_indicators") |
| Additional Properties | Any | Optional | can be null | |
#### name
`name`
* is required
* Type: `string` ([The name of the band (e.g., B01, B8, band2, red).](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md "airs_model#/$defs/Band/properties/name")
##### name Type
`string` ([The name of the band (e.g., B01, B8, band2, red).](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md))
##### name Constraints
**maximum length**: the maximum number of characters for this string is: `300`
#### common\_name
`common_name`
* is optional
* Type: merged type ([The name commonly used to refer to the band to make it easier to search for bands across instruments. See the list of accepted common names.](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md "airs_model#/$defs/Band/properties/common_name")
##### common\_name Type
merged type ([The name commonly used to refer to the band to make it easier to search for bands across instruments. See the list of accepted common names.](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md))
any of
* [Untitled string in Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names-anyof-1.md "check type definition")
#### description
`description`
* is optional
* Type: merged type ([Description to fully explain the band. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md "airs_model#/$defs/Band/properties/description")
##### description Type
merged type ([Description to fully explain the band. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))
any of
* [Untitled string in Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-1.md "check type definition")
#### center\_wavelength
`center_wavelength`
* is optional
* Type: merged type ([The center wavelength of the band, in micrometers (μm).](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm.md "airs_model#/$defs/Band/properties/center_wavelength")
##### center\_wavelength Type
merged type ([The center wavelength of the band, in micrometers (μm).](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm.md))
any of
* [Untitled number in Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-μm-anyof-1.md "check type definition")
#### full\_width\_half\_max
`full_width_half_max`
* is optional
* Type: merged type ([Full width at half maximum (FWHM). The width of the band, as measured at half the maximum transmission, in micrometers (μm).](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm.md "airs_model#/$defs/Band/properties/full_width_half_max")
##### full\_width\_half\_max Type
merged type ([Full width at half maximum (FWHM). The width of the band, as measured at half the maximum transmission, in micrometers (μm).](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm.md))
any of
* [Untitled number in Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-μm-anyof-1.md "check type definition")
#### solar\_illumination
`solar_illumination`
* is optional
* Type: merged type ([The solar illumination of the band, as measured at half the maximum transmission, in W/m2/micrometers.](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md "airs_model#/$defs/Band/properties/solar_illumination")
##### solar\_illumination Type
merged type ([The solar illumination of the band, as measured at half the maximum transmission, in W/m2/micrometers.](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md))
any of
* [Untitled number in Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers-anyof-1.md "check type definition")
#### quality\_indicators
`quality_indicators`
* is optional
* Type: merged type ([Set of indicators for estimating the quality of the datacube variable (band).](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md))
* cannot be null
* defined in: [Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md "airs_model#/$defs/Band/properties/quality_indicators")
##### quality\_indicators Type
merged type ([Set of indicators for estimating the quality of the datacube variable (band).](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md))
any of
* [Indicators](model-defs-indicators.md "check type definition")
* [Untitled null in Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band-anyof-1.md "check type definition")
#### Additional Properties
Additional properties are allowed and do not have to follow a specific schema
### Definitions group DimensionType
Reference this group by using
```json
{"$ref":"airs_model#/$defs/DimensionType"}
```
| Property | Type | Required | Nullable | Defined by |
| :------- | :--- | :------- | :------- | :--------- |
### Definitions group Group
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Group"}
```
| Property | Type | Required | Nullable | Defined by |
| :------------------------------------------- | :----- | :------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [timestamp](#timestamp) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-the-timestamp-of-this-temporal-group.md "airs_model#/$defs/Group/properties/timestamp") |
| [rasters](#rasters) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md "airs_model#/$defs/Group/properties/rasters") |
| [quality\_indicators](#quality_indicators-1) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md "airs_model#/$defs/Group/properties/quality_indicators") |
#### timestamp
`timestamp`
* is optional
* Type: merged type ([The timestamp of this temporal group.](model-defs-group-properties-the-timestamp-of-this-temporal-group.md))
* cannot be null
* defined in: [Item](model-defs-group-properties-the-timestamp-of-this-temporal-group.md "airs_model#/$defs/Group/properties/timestamp")
##### timestamp Type
merged type ([The timestamp of this temporal group.](model-defs-group-properties-the-timestamp-of-this-temporal-group.md))
any of
* [Untitled integer in Item](model-defs-group-properties-the-timestamp-of-this-temporal-group-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-group-properties-the-timestamp-of-this-temporal-group-anyof-1.md "check type definition")
#### rasters
`rasters`
* is optional
* Type: merged type ([The rasters belonging to this temporal group.](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md))
* cannot be null
* defined in: [Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md "airs_model#/$defs/Group/properties/rasters")
##### rasters Type
merged type ([The rasters belonging to this temporal group.](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md))
any of
* [Untitled array in Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group-anyof-1.md "check type definition")
#### quality\_indicators
`quality_indicators`
* is optional
* Type: merged type ([Set of indicators for estimating the quality of the datacube group. The indicators are group based.](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md))
* cannot be null
* defined in: [Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md "airs_model#/$defs/Group/properties/quality_indicators")
##### quality\_indicators Type
merged type ([Set of indicators for estimating the quality of the datacube group. The indicators are group based.](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md))
any of
* [Indicators](model-defs-indicators.md "check type definition")
* [Untitled null in Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based-anyof-1.md "check type definition")
### Definitions group Indicators
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Indicators"}
```
| Property | Type | Required | Nullable | Defined by |
| :------------------------------------- | :----- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [time\_compacity](#time_compacity) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md "airs_model#/$defs/Indicators/properties/time_compacity") |
| [spatial\_coverage](#spatial_coverage) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md "airs_model#/$defs/Indicators/properties/spatial_coverage") |
| [group\_lightness](#group_lightness) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md "airs_model#/$defs/Indicators/properties/group_lightness") |
| [time\_regularity](#time_regularity) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md "airs_model#/$defs/Indicators/properties/time_regularity") |
#### time\_compacity
`time_compacity`
* is optional
* Type: merged type ([Indicates whether the temporal extend of the temporal slices (groups) are compact or not compared to the cube temporal extend. Computed as follow: 1-range(group rasters) / range(cube rasters).](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md))
* cannot be null
* defined in: [Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md "airs_model#/$defs/Indicators/properties/time_compacity")
##### time\_compacity Type
merged type ([Indicates whether the temporal extend of the temporal slices (groups) are compact or not compared to the cube temporal extend. Computed as follow: 1-range(group rasters) / range(cube rasters).](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md))
any of
* [Untitled number in Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters-anyof-1.md "check type definition")
#### spatial\_coverage
`spatial_coverage`
* is optional
* Type: merged type ([Indicates the proportion of the region of interest that is covered by the input rasters. Computed as follow: area(intersection(union(rasters),roi)) / area(roi))](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md))
* cannot be null
* defined in: [Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md "airs_model#/$defs/Indicators/properties/spatial_coverage")
##### spatial\_coverage Type
merged type ([Indicates the proportion of the region of interest that is covered by the input rasters. Computed as follow: area(intersection(union(rasters),roi)) / area(roi))](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md))
any of
* [Untitled number in Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi-anyof-1.md "check type definition")
#### group\_lightness
`group_lightness`
* is optional
* Type: merged type ([Indicates the proportion of non overlapping regions between the different input rasters. Computed as follow: area(intersection(union(rasters),roi)) / sum(area(intersection(raster, roi)))](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md))
* cannot be null
* defined in: [Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md "airs_model#/$defs/Indicators/properties/group_lightness")
##### group\_lightness Type
merged type ([Indicates the proportion of non overlapping regions between the different input rasters. Computed as follow: area(intersection(union(rasters),roi)) / sum(area(intersection(raster, roi)))](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md))
any of
* [Untitled number in Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi-anyof-1.md "check type definition")
#### time\_regularity
`time_regularity`
* is optional
* Type: merged type ([Indicates the regularity of the extends between the temporal slices (groups). Computed as follow: 1-std(inter group temporal gaps)/avg(inter group temporal gaps)](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md))
* cannot be null
* defined in: [Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md "airs_model#/$defs/Indicators/properties/time_regularity")
##### time\_regularity Type
merged type ([Indicates the regularity of the extends between the temporal slices (groups). Computed as follow: 1-std(inter group temporal gaps)/avg(inter group temporal gaps)](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md))
any of
* [Untitled number in Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps-anyof-1.md "check type definition")
### Definitions group Properties
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Properties"}
```
| Property | Type | Required | Nullable | Defined by |
| :------------------------------------------------------------------------ | :----- | :------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [datetime](#datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md "airs_model#/$defs/Properties/properties/datetime") |
| [start\_datetime](#start_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md "airs_model#/$defs/Properties/properties/start_datetime") |
| [end\_datetime](#end_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md "airs_model#/$defs/Properties/properties/end_datetime") |
| [keywords](#keywords) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-list-of-keywords.md "airs_model#/$defs/Properties/properties/keywords") |
| [programme](#programme) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-programme.md "airs_model#/$defs/Properties/properties/programme") |
| [constellation](#constellation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-constellation.md "airs_model#/$defs/Properties/properties/constellation") |
| [satellite](#satellite) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-satellite.md "airs_model#/$defs/Properties/properties/satellite") |
| [platform](#platform) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-satellite-platform.md "airs_model#/$defs/Properties/properties/platform") |
| [instrument](#instrument) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-instrument.md "airs_model#/$defs/Properties/properties/instrument") |
| [sensor](#sensor) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-sensor.md "airs_model#/$defs/Properties/properties/sensor") |
| [sensor\_mode](#sensor_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md "airs_model#/$defs/Properties/properties/sensor_mode") |
| [sensor\_type](#sensor_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-sensor.md "airs_model#/$defs/Properties/properties/sensor_type") |
| [annotations](#annotations) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-human-annotations-for-the-item.md "airs_model#/$defs/Properties/properties/annotations") |
| [gsd](#gsd-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-ground-sampling-distance-resolution.md "airs_model#/$defs/Properties/properties/gsd") |
| [secondary\_id](#secondary_id) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-secondary-identifier.md "airs_model#/$defs/Properties/properties/secondary_id") |
| [data\_type](#data_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-data.md "airs_model#/$defs/Properties/properties/data_type") |
| [item\_type](#item_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-data-resourcetype.md "airs_model#/$defs/Properties/properties/item_type") |
| [item\_format](#item_format) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-data-format-itemformat.md "airs_model#/$defs/Properties/properties/item_format") |
| [main\_asset\_format](#main_asset_format) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md "airs_model#/$defs/Properties/properties/main_asset_format") |
| [main\_asset\_name](#main_asset_name) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-main-asset-assetformat.md "airs_model#/$defs/Properties/properties/main_asset_name") |
| [observation\_type](#observation_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-observation-observationtype.md "airs_model#/$defs/Properties/properties/observation_type") |
| [data\_coverage](#data_coverage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-data-cover.md "airs_model#/$defs/Properties/properties/data_coverage") |
| [water\_coverage](#water_coverage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-water-cover.md "airs_model#/$defs/Properties/properties/water_coverage") |
| [locations](#locations) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md "airs_model#/$defs/Properties/properties/locations") |
| [create\_datetime](#create_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md "airs_model#/$defs/Properties/properties/create_datetime") |
| [update\_datetime](#update_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md "airs_model#/$defs/Properties/properties/update_datetime") |
| [view\_\_off\_nadir](#view__off_nadir) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md "airs_model#/$defs/Properties/properties/view__off_nadir") |
| [view\_\_incidence\_angle](#view__incidence_angle) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md "airs_model#/$defs/Properties/properties/view__incidence_angle") |
| [view\_\_azimuth](#view__azimuth) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md "airs_model#/$defs/Properties/properties/view__azimuth") |
| [view\_\_sun\_azimuth](#view__sun_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md "airs_model#/$defs/Properties/properties/view__sun_azimuth") |
| [view\_\_sun\_elevation](#view__sun_elevation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md "airs_model#/$defs/Properties/properties/view__sun_elevation") |
| [storage\_\_requester\_pays](#storage__requester_pays-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md "airs_model#/$defs/Properties/properties/storage__requester_pays") |
| [storage\_\_tier](#storage__tier-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md "airs_model#/$defs/Properties/properties/storage__tier") |
| [storage\_\_platform](#storage__platform-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md "airs_model#/$defs/Properties/properties/storage__platform") |
| [storage\_\_region](#storage__region-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md "airs_model#/$defs/Properties/properties/storage__region") |
| [eo\_\_cloud\_cover](#eo__cloud_cover) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-cloud-cover.md "airs_model#/$defs/Properties/properties/eo__cloud_cover") |
| [eo\_\_snow\_cover](#eo__snow_cover) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md "airs_model#/$defs/Properties/properties/eo__snow_cover") |
| [eo\_\_bands](#eo__bands-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md "airs_model#/$defs/Properties/properties/eo__bands") |
| [processing\_\_expression](#processing__expression) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md "airs_model#/$defs/Properties/properties/processing__expression") |
| [processing\_\_lineage](#processing__lineage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md "airs_model#/$defs/Properties/properties/processing__lineage") |
| [processing\_\_level](#processing__level) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md "airs_model#/$defs/Properties/properties/processing__level") |
| [processing\_\_facility](#processing__facility) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md "airs_model#/$defs/Properties/properties/processing__facility") |
| [processing\_\_software](#processing__software) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md "airs_model#/$defs/Properties/properties/processing__software") |
| [dc3\_\_quality\_indicators](#dc3__quality_indicators) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md "airs_model#/$defs/Properties/properties/dc3__quality_indicators") |
| [dc3\_\_composition](#dc3__composition) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md "airs_model#/$defs/Properties/properties/dc3__composition") |
| [dc3\_\_number\_of\_chunks](#dc3__number_of_chunks) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md "airs_model#/$defs/Properties/properties/dc3__number_of_chunks") |
| [dc3\_\_chunk\_weight](#dc3__chunk_weight) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md "airs_model#/$defs/Properties/properties/dc3__chunk_weight") |
| [dc3\_\_fill\_ratio](#dc3__fill_ratio) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md "airs_model#/$defs/Properties/properties/dc3__fill_ratio") |
| [cube\_\_dimensions](#cube__dimensions) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md "airs_model#/$defs/Properties/properties/cube__dimensions") |
| [cube\_\_variables](#cube__variables) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md "airs_model#/$defs/Properties/properties/cube__variables") |
| [acq\_\_acquisition\_mode](#acq__acquisition_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-acquisition-mode.md "airs_model#/$defs/Properties/properties/acq__acquisition_mode") |
| [acq\_\_acquisition\_orbit\_direction](#acq__acquisition_orbit_direction) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md "airs_model#/$defs/Properties/properties/acq__acquisition_orbit_direction") |
| [acq\_\_acquisition\_type](#acq__acquisition_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-type-strip.md "airs_model#/$defs/Properties/properties/acq__acquisition_type") |
| [acq\_\_acquisition\_orbit](#acq__acquisition_orbit) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-orbit.md "airs_model#/$defs/Properties/properties/acq__acquisition_orbit") |
| [acq\_\_across\_track](#acq__across_track) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-across-track-angle.md "airs_model#/$defs/Properties/properties/acq__across_track") |
| [acq\_\_along\_track](#acq__along_track) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-along-track-angle.md "airs_model#/$defs/Properties/properties/acq__along_track") |
| [acq\_\_archiving\_date](#acq__archiving_date) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-archiving-date.md "airs_model#/$defs/Properties/properties/acq__archiving_date") |
| [acq\_\_download\_orbit](#acq__download_orbit) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-download-orbit.md "airs_model#/$defs/Properties/properties/acq__download_orbit") |
| [acq\_\_request\_id](#acq__request_id) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-original-request-identifier.md "airs_model#/$defs/Properties/properties/acq__request_id") |
| [acq\_\_quality\_average](#acq__quality_average) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-quality-average.md "airs_model#/$defs/Properties/properties/acq__quality_average") |
| [acq\_\_quality\_computation](#acq__quality_computation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-quality-computation.md "airs_model#/$defs/Properties/properties/acq__quality_computation") |
| [acq\_\_receiving\_station](#acq__receiving_station) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-receiving-station.md "airs_model#/$defs/Properties/properties/acq__receiving_station") |
| [acq\_\_reception\_date](#acq__reception_date) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-reception-date.md "airs_model#/$defs/Properties/properties/acq__reception_date") |
| [acq\_\_spectral\_mode](#acq__spectral_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-spectral-mode.md "airs_model#/$defs/Properties/properties/acq__spectral_mode") |
| [sar\_\_instrument\_mode](#sar__instrument_mode-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md "airs_model#/$defs/Properties/properties/sar__instrument_mode") |
| [sar\_\_frequency\_band](#sar__frequency_band-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md "airs_model#/$defs/Properties/properties/sar__frequency_band") |
| [sar\_\_center\_frequency](#sar__center_frequency-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md "airs_model#/$defs/Properties/properties/sar__center_frequency") |
| [sar\_\_polarizations](#sar__polarizations-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-any-combination-of-polarizations.md "airs_model#/$defs/Properties/properties/sar__polarizations") |
| [sar\_\_product\_type](#sar__product_type-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md "airs_model#/$defs/Properties/properties/sar__product_type") |
| [sar\_\_resolution\_range](#sar__resolution_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Properties/properties/sar__resolution_range") |
| [sar\_\_resolution\_azimuth](#sar__resolution_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Properties/properties/sar__resolution_azimuth") |
| [sar\_\_pixel\_spacing\_range](#sar__pixel_spacing_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Properties/properties/sar__pixel_spacing_range") |
| [sar\_\_pixel\_spacing\_azimuth](#sar__pixel_spacing_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Properties/properties/sar__pixel_spacing_azimuth") |
| [sar\_\_looks\_range](#sar__looks_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md "airs_model#/$defs/Properties/properties/sar__looks_range") |
| [sar\_\_looks\_azimuth](#sar__looks_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md "airs_model#/$defs/Properties/properties/sar__looks_azimuth") |
| [sar\_\_looks\_equivalent\_number](#sar__looks_equivalent_number-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md "airs_model#/$defs/Properties/properties/sar__looks_equivalent_number") |
| [sar\_\_observation\_direction](#sar__observation_direction-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md "airs_model#/$defs/Properties/properties/sar__observation_direction") |
| [proj\_\_epsg](#proj__epsg-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-epsg-code-of-the-datasource.md "airs_model#/$defs/Properties/properties/proj__epsg") |
| [proj\_\_wkt2](#proj__wkt2-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md "airs_model#/$defs/Properties/properties/proj__wkt2") |
| [proj\_\_geometry](#proj__geometry-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-defines-the-footprint-of-this-item.md "airs_model#/$defs/Properties/properties/proj__geometry") |
| [proj\_\_bbox](#proj__bbox-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md "airs_model#/$defs/Properties/properties/proj__bbox") |
| [proj\_\_centroid](#proj__centroid-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md "airs_model#/$defs/Properties/properties/proj__centroid") |
| [proj\_\_shape](#proj__shape-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md "airs_model#/$defs/Properties/properties/proj__shape") |
| [proj\_\_transform](#proj__transform-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md "airs_model#/$defs/Properties/properties/proj__transform") |
| [generated\_\_has\_overview](#generated__has_overview) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md "airs_model#/$defs/Properties/properties/generated__has_overview") |
| [generated\_\_has\_thumbnail](#generated__has_thumbnail) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md "airs_model#/$defs/Properties/properties/generated__has_thumbnail") |
| [generated\_\_has\_metadata](#generated__has_metadata) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md "airs_model#/$defs/Properties/properties/generated__has_metadata") |
| [generated\_\_has\_data](#generated__has_data) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md "airs_model#/$defs/Properties/properties/generated__has_data") |
| [generated\_\_has\_cog](#generated__has_cog) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md "airs_model#/$defs/Properties/properties/generated__has_cog") |
| [generated\_\_has\_zarr](#generated__has_zarr) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md "airs_model#/$defs/Properties/properties/generated__has_zarr") |
| [generated\_\_date\_keywords](#generated__date_keywords) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md "airs_model#/$defs/Properties/properties/generated__date_keywords") |
| [generated\_\_day\_of\_week](#generated__day_of_week) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-day-of-week.md "airs_model#/$defs/Properties/properties/generated__day_of_week") |
| [generated\_\_day\_of\_year](#generated__day_of_year) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-day-of-year.md "airs_model#/$defs/Properties/properties/generated__day_of_year") |
| [generated\_\_hour\_of\_day](#generated__hour_of_day) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-hour-of-day.md "airs_model#/$defs/Properties/properties/generated__hour_of_day") |
| [generated\_\_minute\_of\_day](#generated__minute_of_day) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-minute-of-day.md "airs_model#/$defs/Properties/properties/generated__minute_of_day") |
| [generated\_\_month](#generated__month) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-month.md "airs_model#/$defs/Properties/properties/generated__month") |
| [generated\_\_year](#generated__year) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-year.md "airs_model#/$defs/Properties/properties/generated__year") |
| [generated\_\_season](#generated__season) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-season.md "airs_model#/$defs/Properties/properties/generated__season") |
| [generated\_\_tltrbrbl](#generated__tltrbrbl) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md "airs_model#/$defs/Properties/properties/generated__tltrbrbl") |
| [generated\_\_band\_common\_names](#generated__band_common_names) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-the-band-common-names.md "airs_model#/$defs/Properties/properties/generated__band_common_names") |
| [generated\_\_band\_names](#generated__band_names) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-the-band-names.md "airs_model#/$defs/Properties/properties/generated__band_names") |
| [generated\_\_geohash2](#generated__geohash2) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-two-characters.md "airs_model#/$defs/Properties/properties/generated__geohash2") |
| [generated\_\_geohash3](#generated__geohash3) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-three-characters.md "airs_model#/$defs/Properties/properties/generated__geohash3") |
| [generated\_\_geohash4](#generated__geohash4) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-four-characters.md "airs_model#/$defs/Properties/properties/generated__geohash4") |
| [generated\_\_geohash5](#generated__geohash5) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-five-characters.md "airs_model#/$defs/Properties/properties/generated__geohash5") |
| Additional Properties | Any | Optional | can be null | |
#### datetime
`datetime`
* is optional
* Type: merged type ([datetime associated with this item. If None, a start\_datetime and end\_datetime must be supplied.](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md "airs_model#/$defs/Properties/properties/datetime")
##### datetime Type
merged type ([datetime associated with this item. If None, a start\_datetime and end\_datetime must be supplied.](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md))
any of
* [Untitled string in Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied-anyof-1.md "check type definition")
#### start\_datetime
`start_datetime`
* is optional
* Type: merged type ([Optional start datetime, part of common metadata. This value will override any start\_datetime key in properties.](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md "airs_model#/$defs/Properties/properties/start_datetime")
##### start\_datetime Type
merged type ([Optional start datetime, part of common metadata. This value will override any start\_datetime key in properties.](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md))
any of
* [Untitled string in Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties-anyof-1.md "check type definition")
#### end\_datetime
`end_datetime`
* is optional
* Type: merged type ([Optional end datetime, part of common metadata. This value will override any end\_datetime key in properties.](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md "airs_model#/$defs/Properties/properties/end_datetime")
##### end\_datetime Type
merged type ([Optional end datetime, part of common metadata. This value will override any end\_datetime key in properties.](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md))
any of
* [Untitled string in Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties-anyof-1.md "check type definition")
#### keywords
`keywords`
* is optional
* Type: merged type ([A list of keywords](model-defs-properties-properties-a-list-of-keywords.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-a-list-of-keywords.md "airs_model#/$defs/Properties/properties/keywords")
##### keywords Type
merged type ([A list of keywords](model-defs-properties-properties-a-list-of-keywords.md))
any of
* [Untitled array in Item](model-defs-properties-properties-a-list-of-keywords-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-a-list-of-keywords-anyof-1.md "check type definition")
#### programme
`programme`
* is optional
* Type: merged type ([Name of the programme](model-defs-properties-properties-name-of-the-programme.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-programme.md "airs_model#/$defs/Properties/properties/programme")
##### programme Type
merged type ([Name of the programme](model-defs-properties-properties-name-of-the-programme.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-programme-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-programme-anyof-1.md "check type definition")
#### constellation
`constellation`
* is optional
* Type: merged type ([Name of the constellation](model-defs-properties-properties-name-of-the-constellation.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-constellation.md "airs_model#/$defs/Properties/properties/constellation")
##### constellation Type
merged type ([Name of the constellation](model-defs-properties-properties-name-of-the-constellation.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-constellation-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-constellation-anyof-1.md "check type definition")
#### satellite
`satellite`
* is optional
* Type: merged type ([Name of the satellite](model-defs-properties-properties-name-of-the-satellite.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-satellite.md "airs_model#/$defs/Properties/properties/satellite")
##### satellite Type
merged type ([Name of the satellite](model-defs-properties-properties-name-of-the-satellite.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-satellite-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-satellite-anyof-1.md "check type definition")
#### platform
`platform`
* is optional
* Type: merged type ([Name of the satellite platform](model-defs-properties-properties-name-of-the-satellite-platform.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-satellite-platform.md "airs_model#/$defs/Properties/properties/platform")
##### platform Type
merged type ([Name of the satellite platform](model-defs-properties-properties-name-of-the-satellite-platform.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-satellite-platform-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-satellite-platform-anyof-1.md "check type definition")
#### instrument
`instrument`
* is optional
* Type: merged type ([Name of the instrument](model-defs-properties-properties-name-of-the-instrument.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-instrument.md "airs_model#/$defs/Properties/properties/instrument")
##### instrument Type
merged type ([Name of the instrument](model-defs-properties-properties-name-of-the-instrument.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-instrument-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-instrument-anyof-1.md "check type definition")
#### sensor
`sensor`
* is optional
* Type: merged type ([Name of the sensor](model-defs-properties-properties-name-of-the-sensor.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-sensor.md "airs_model#/$defs/Properties/properties/sensor")
##### sensor Type
merged type ([Name of the sensor](model-defs-properties-properties-name-of-the-sensor.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-sensor-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-sensor-anyof-1.md "check type definition")
#### sensor\_mode
`sensor_mode`
* is optional
* Type: merged type ([Mode of the sensor during acquisition](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md "airs_model#/$defs/Properties/properties/sensor_mode")
##### sensor\_mode Type
merged type ([Mode of the sensor during acquisition](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md))
any of
* [Untitled string in Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition-anyof-1.md "check type definition")
#### sensor\_type
`sensor_type`
* is optional
* Type: merged type ([Type of sensor](model-defs-properties-properties-type-of-sensor.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-type-of-sensor.md "airs_model#/$defs/Properties/properties/sensor_type")
##### sensor\_type Type
merged type ([Type of sensor](model-defs-properties-properties-type-of-sensor.md))
any of
* [Untitled string in Item](model-defs-properties-properties-type-of-sensor-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-type-of-sensor-anyof-1.md "check type definition")
#### annotations
`annotations`
* is optional
* Type: merged type ([Human annotations for the item](model-defs-properties-properties-human-annotations-for-the-item.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-human-annotations-for-the-item.md "airs_model#/$defs/Properties/properties/annotations")
##### annotations Type
merged type ([Human annotations for the item](model-defs-properties-properties-human-annotations-for-the-item.md))
any of
* [Untitled string in Item](model-defs-properties-properties-human-annotations-for-the-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-human-annotations-for-the-item-anyof-1.md "check type definition")
#### gsd
`gsd`
* is optional
* Type: merged type ([Ground Sampling Distance (resolution)](model-defs-properties-properties-ground-sampling-distance-resolution.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-ground-sampling-distance-resolution.md "airs_model#/$defs/Properties/properties/gsd")
##### gsd Type
merged type ([Ground Sampling Distance (resolution)](model-defs-properties-properties-ground-sampling-distance-resolution.md))
any of
* [Untitled number in Item](model-defs-properties-properties-ground-sampling-distance-resolution-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-ground-sampling-distance-resolution-anyof-1.md "check type definition")
#### secondary\_id
`secondary_id`
* is optional
* Type: merged type ([Secondary identifier](model-defs-properties-properties-secondary-identifier.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-secondary-identifier.md "airs_model#/$defs/Properties/properties/secondary_id")
##### secondary\_id Type
merged type ([Secondary identifier](model-defs-properties-properties-secondary-identifier.md))
any of
* [Untitled string in Item](model-defs-properties-properties-secondary-identifier-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-secondary-identifier-anyof-1.md "check type definition")
#### data\_type
`data_type`
* is optional
* Type: merged type ([Type of data](model-defs-properties-properties-type-of-data.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-type-of-data.md "airs_model#/$defs/Properties/properties/data_type")
##### data\_type Type
merged type ([Type of data](model-defs-properties-properties-type-of-data.md))
any of
* [Untitled string in Item](model-defs-properties-properties-type-of-data-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-type-of-data-anyof-1.md "check type definition")
#### item\_type
`item_type`
* is optional
* Type: merged type ([Type of data (ResourceType)](model-defs-properties-properties-type-of-data-resourcetype.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-type-of-data-resourcetype.md "airs_model#/$defs/Properties/properties/item_type")
##### item\_type Type
merged type ([Type of data (ResourceType)](model-defs-properties-properties-type-of-data-resourcetype.md))
any of
* [Untitled string in Item](model-defs-properties-properties-type-of-data-resourcetype-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-type-of-data-resourcetype-anyof-1.md "check type definition")
#### item\_format
`item_format`
* is optional
* Type: merged type ([Data format (ItemFormat)](model-defs-properties-properties-data-format-itemformat.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-data-format-itemformat.md "airs_model#/$defs/Properties/properties/item_format")
##### item\_format Type
merged type ([Data format (ItemFormat)](model-defs-properties-properties-data-format-itemformat.md))
any of
* [Untitled string in Item](model-defs-properties-properties-data-format-itemformat-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-data-format-itemformat-anyof-1.md "check type definition")
#### main\_asset\_format
`main_asset_format`
* is optional
* Type: merged type ([Data format of the main asset (AssetFormat)](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md "airs_model#/$defs/Properties/properties/main_asset_format")
##### main\_asset\_format Type
merged type ([Data format of the main asset (AssetFormat)](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md))
any of
* [Untitled string in Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat-anyof-1.md "check type definition")
#### main\_asset\_name
`main_asset_name`
* is optional
* Type: merged type ([Name of the main asset (AssetFormat)](model-defs-properties-properties-name-of-the-main-asset-assetformat.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-name-of-the-main-asset-assetformat.md "airs_model#/$defs/Properties/properties/main_asset_name")
##### main\_asset\_name Type
merged type ([Name of the main asset (AssetFormat)](model-defs-properties-properties-name-of-the-main-asset-assetformat.md))
any of
* [Untitled string in Item](model-defs-properties-properties-name-of-the-main-asset-assetformat-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-name-of-the-main-asset-assetformat-anyof-1.md "check type definition")
#### observation\_type
`observation_type`
* is optional
* Type: merged type ([Type of observation (ObservationType)](model-defs-properties-properties-type-of-observation-observationtype.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-type-of-observation-observationtype.md "airs_model#/$defs/Properties/properties/observation_type")
##### observation\_type Type
merged type ([Type of observation (ObservationType)](model-defs-properties-properties-type-of-observation-observationtype.md))
any of
* [Untitled string in Item](model-defs-properties-properties-type-of-observation-observationtype-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-type-of-observation-observationtype-anyof-1.md "check type definition")
#### data\_coverage
`data_coverage`
* is optional
* Type: merged type ([Estimate of data cover](model-defs-properties-properties-estimate-of-data-cover.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-estimate-of-data-cover.md "airs_model#/$defs/Properties/properties/data_coverage")
##### data\_coverage Type
merged type ([Estimate of data cover](model-defs-properties-properties-estimate-of-data-cover.md))
any of
* [Untitled number in Item](model-defs-properties-properties-estimate-of-data-cover-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-estimate-of-data-cover-anyof-1.md "check type definition")
#### water\_coverage
`water_coverage`
* is optional
* Type: merged type ([Estimate of water cover](model-defs-properties-properties-estimate-of-water-cover.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-estimate-of-water-cover.md "airs_model#/$defs/Properties/properties/water_coverage")
##### water\_coverage Type
merged type ([Estimate of water cover](model-defs-properties-properties-estimate-of-water-cover.md))
any of
* [Untitled number in Item](model-defs-properties-properties-estimate-of-water-cover-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-estimate-of-water-cover-anyof-1.md "check type definition")
#### locations
`locations`
* is optional
* Type: merged type ([List of locations covered by the item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md "airs_model#/$defs/Properties/properties/locations")
##### locations Type
merged type ([List of locations covered by the item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md))
any of
* [Untitled array in Item](model-defs-properties-properties-list-of-locations-covered-by-the-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-list-of-locations-covered-by-the-item-anyof-1.md "check type definition")
#### create\_datetime
`create_datetime`
* is optional
* Type: merged type ([Date of item creation in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md "airs_model#/$defs/Properties/properties/create_datetime")
##### create\_datetime Type
merged type ([Date of item creation in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-1.md "check type definition")
#### update\_datetime
`update_datetime`
* is optional
* Type: merged type ([Update date of the item in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md "airs_model#/$defs/Properties/properties/update_datetime")
##### update\_datetime Type
merged type ([Update date of the item in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-1.md "check type definition")
#### view\_\_off\_nadir
`view__off_nadir`
* is optional
* Type: merged type ([The angle from the sensor between nadir (straight down) and the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md "airs_model#/$defs/Properties/properties/view__off_nadir")
##### view\_\_off\_nadir Type
merged type ([The angle from the sensor between nadir (straight down) and the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90-anyof-1.md "check type definition")
#### view\_\_incidence\_angle
`view__incidence_angle`
* is optional
* Type: merged type ([The incidence angle is the angle between the vertical (normal) to the intercepting surface and the line of sight back to the satellite at the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md "airs_model#/$defs/Properties/properties/view__incidence_angle")
##### view\_\_incidence\_angle Type
merged type ([The incidence angle is the angle between the vertical (normal) to the intercepting surface and the line of sight back to the satellite at the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90-anyof-1.md "check type definition")
#### view\_\_azimuth
`view__azimuth`
* is optional
* Type: merged type ([Viewing azimuth angle. The angle measured from the sub-satellite point (point on the ground below the platform) between the scene center and true north. Measured clockwise from north in degrees (0-360).](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md "airs_model#/$defs/Properties/properties/view__azimuth")
##### view\_\_azimuth Type
merged type ([Viewing azimuth angle. The angle measured from the sub-satellite point (point on the ground below the platform) between the scene center and true north. Measured clockwise from north in degrees (0-360).](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md))
any of
* [Untitled number in Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360-anyof-1.md "check type definition")
#### view\_\_sun\_azimuth
`view__sun_azimuth`
* is optional
* Type: merged type ([Sun azimuth angle. From the scene center point on the ground, this is the angle between truth north and the sun. Measured clockwise in degrees (0-360).](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md "airs_model#/$defs/Properties/properties/view__sun_azimuth")
##### view\_\_sun\_azimuth Type
merged type ([Sun azimuth angle. From the scene center point on the ground, this is the angle between truth north and the sun. Measured clockwise in degrees (0-360).](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md))
any of
* [Untitled number in Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360-anyof-1.md "check type definition")
#### view\_\_sun\_elevation
`view__sun_elevation`
* is optional
* Type: merged type ([Sun elevation angle. The angle from the tangent of the scene center point to the sun. Measured from the horizon in degrees (-90-90). Negative values indicate the sun is below the horizon, e.g. sun elevation of -10° \[...\]](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md "airs_model#/$defs/Properties/properties/view__sun_elevation")
##### view\_\_sun\_elevation Type
merged type ([Sun elevation angle. The angle from the tangent of the scene center point to the sun. Measured from the horizon in degrees (-90-90). Negative values indicate the sun is below the horizon, e.g. sun elevation of -10° \[...\]](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md))
any of
* [Untitled number in Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10--anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10--anyof-1.md "check type definition")
#### storage\_\_requester\_pays
`storage__requester_pays`
* is optional
* Type: merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md "airs_model#/$defs/Properties/properties/storage__requester_pays")
##### storage\_\_requester\_pays Type
merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-1.md "check type definition")
#### storage\_\_tier
`storage__tier`
* is optional
* Type: merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md "airs_model#/$defs/Properties/properties/storage__tier")
##### storage\_\_tier Type
merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))
any of
* [Untitled string in Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-1.md "check type definition")
#### storage\_\_platform
`storage__platform`
* is optional
* Type: merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md "airs_model#/$defs/Properties/properties/storage__platform")
##### storage\_\_platform Type
merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))
any of
* [Untitled string in Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-1.md "check type definition")
#### storage\_\_region
`storage__region`
* is optional
* Type: merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md "airs_model#/$defs/Properties/properties/storage__region")
##### storage\_\_region Type
merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-1.md "check type definition")
#### eo\_\_cloud\_cover
`eo__cloud_cover`
* is optional
* Type: merged type ([Estimate of cloud cover.](model-defs-properties-properties-estimate-of-cloud-cover.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-estimate-of-cloud-cover.md "airs_model#/$defs/Properties/properties/eo__cloud_cover")
##### eo\_\_cloud\_cover Type
merged type ([Estimate of cloud cover.](model-defs-properties-properties-estimate-of-cloud-cover.md))
any of
* [Untitled number in Item](model-defs-properties-properties-estimate-of-cloud-cover-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-estimate-of-cloud-cover-anyof-1.md "check type definition")
#### eo\_\_snow\_cover
`eo__snow_cover`
* is optional
* Type: merged type ([Estimate of snow and ice cover.](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md "airs_model#/$defs/Properties/properties/eo__snow_cover")
##### eo\_\_snow\_cover Type
merged type ([Estimate of snow and ice cover.](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md))
any of
* [Untitled number in Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover-anyof-1.md "check type definition")
#### eo\_\_bands
`eo__bands`
* is optional
* Type: merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md "airs_model#/$defs/Properties/properties/eo__bands")
##### eo\_\_bands Type
merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))
any of
* [Untitled array in Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-1.md "check type definition")
#### processing\_\_expression
`processing__expression`
* is optional
* Type: merged type ([An expression or processing chain that describes how the data has been processed. Alternatively, you can also link to a processing chain with the relation type processing-expression (see below).](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md "airs_model#/$defs/Properties/properties/processing__expression")
##### processing\_\_expression Type
merged type ([An expression or processing chain that describes how the data has been processed. Alternatively, you can also link to a processing chain with the relation type processing-expression (see below).](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md))
any of
* [Untitled string in Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below-anyof-1.md "check type definition")
#### processing\_\_lineage
`processing__lineage`
* is optional
* Type: merged type ([Lineage Information provided as free text information about the how observations were processed or models that were used to create the resource being described NASA ISO.](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md "airs_model#/$defs/Properties/properties/processing__lineage")
##### processing\_\_lineage Type
merged type ([Lineage Information provided as free text information about the how observations were processed or models that were used to create the resource being described NASA ISO.](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md))
any of
* [Untitled string in Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso-anyof-1.md "check type definition")
#### processing\_\_level
`processing__level`
* is optional
* Type: merged type ([The name commonly used to refer to the processing level to make it easier to search for product level across collections or items. The short name must be used (only L, not Level).](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md "airs_model#/$defs/Properties/properties/processing__level")
##### processing\_\_level Type
merged type ([The name commonly used to refer to the processing level to make it easier to search for product level across collections or items. The short name must be used (only L, not Level).](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level-anyof-1.md "check type definition")
#### processing\_\_facility
`processing__facility`
* is optional
* Type: merged type ([The name of the facility that produced the data. For example, Copernicus S1 Core Ground Segment - DPA for product of Sentinel-1 satellites.](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md "airs_model#/$defs/Properties/properties/processing__facility")
##### processing\_\_facility Type
merged type ([The name of the facility that produced the data. For example, Copernicus S1 Core Ground Segment - DPA for product of Sentinel-1 satellites.](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites-anyof-1.md "check type definition")
#### processing\_\_software
`processing__software`
* is optional
* Type: merged type ([A dictionary with name/version for key/value describing one or more softwares that produced the data.](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md "airs_model#/$defs/Properties/properties/processing__software")
##### processing\_\_software Type
merged type ([A dictionary with name/version for key/value describing one or more softwares that produced the data.](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md))
any of
* [Untitled object in Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data-anyof-1.md "check type definition")
#### dc3\_\_quality\_indicators
`dc3__quality_indicators`
* is optional
* Type: merged type ([Set of indicators for estimating the quality of the datacube based on the composition. The indicators are group based. A cube indicator is the product of its corresponding group indicator.](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md "airs_model#/$defs/Properties/properties/dc3__quality_indicators")
##### dc3\_\_quality\_indicators Type
merged type ([Set of indicators for estimating the quality of the datacube based on the composition. The indicators are group based. A cube indicator is the product of its corresponding group indicator.](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md))
any of
* [Indicators](model-defs-indicators.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator-anyof-1.md "check type definition")
#### dc3\_\_composition
`dc3__composition`
* is optional
* Type: merged type ([List of raster groups used for elaborating the cube temporal slices.](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md "airs_model#/$defs/Properties/properties/dc3__composition")
##### dc3\_\_composition Type
merged type ([List of raster groups used for elaborating the cube temporal slices.](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md))
any of
* [Untitled array in Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices-anyof-1.md "check type definition")
#### dc3\_\_number\_of\_chunks
`dc3__number_of_chunks`
* is optional
* Type: merged type ([Number of chunks (if zarr or similar partitioned format) within the cube.](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md "airs_model#/$defs/Properties/properties/dc3__number_of_chunks")
##### dc3\_\_number\_of\_chunks Type
merged type ([Number of chunks (if zarr or similar partitioned format) within the cube.](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube-anyof-1.md "check type definition")
#### dc3\_\_chunk\_weight
`dc3__chunk_weight`
* is optional
* Type: merged type ([Weight of a chunk (number of bytes).](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md "airs_model#/$defs/Properties/properties/dc3__chunk_weight")
##### dc3\_\_chunk\_weight Type
merged type ([Weight of a chunk (number of bytes).](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes-anyof-1.md "check type definition")
#### dc3\_\_fill\_ratio
`dc3__fill_ratio`
* is optional
* Type: merged type ([1: the cube is full, 0 the cube is empty, in between the cube is partially filled.](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md "airs_model#/$defs/Properties/properties/dc3__fill_ratio")
##### dc3\_\_fill\_ratio Type
merged type ([1: the cube is full, 0 the cube is empty, in between the cube is partially filled.](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md))
any of
* [Untitled number in Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled-anyof-1.md "check type definition")
#### cube\_\_dimensions
`cube__dimensions`
* is optional
* Type: merged type ([Uniquely named dimensions of the datacube.](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md "airs_model#/$defs/Properties/properties/cube__dimensions")
##### cube\_\_dimensions Type
merged type ([Uniquely named dimensions of the datacube.](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md))
any of
* [Untitled object in Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube-anyof-1.md "check type definition")
#### cube\_\_variables
`cube__variables`
* is optional
* Type: merged type ([Uniquely named variables of the datacube.](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md "airs_model#/$defs/Properties/properties/cube__variables")
##### cube\_\_variables Type
merged type ([Uniquely named variables of the datacube.](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md))
any of
* [Untitled object in Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube-anyof-1.md "check type definition")
#### acq\_\_acquisition\_mode
`acq__acquisition_mode`
* is optional
* Type: merged type ([The name of the acquisition mode.](model-defs-properties-properties-the-name-of-the-acquisition-mode.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-name-of-the-acquisition-mode.md "airs_model#/$defs/Properties/properties/acq__acquisition_mode")
##### acq\_\_acquisition\_mode Type
merged type ([The name of the acquisition mode.](model-defs-properties-properties-the-name-of-the-acquisition-mode.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-acquisition-mode-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-acquisition-mode-anyof-1.md "check type definition")
#### acq\_\_acquisition\_orbit\_direction
`acq__acquisition_orbit_direction`
* is optional
* Type: merged type ([Acquisition orbit direction (ASCENDING or DESCENDING).](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md "airs_model#/$defs/Properties/properties/acq__acquisition_orbit_direction")
##### acq\_\_acquisition\_orbit\_direction Type
merged type ([Acquisition orbit direction (ASCENDING or DESCENDING).](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md))
any of
* [Untitled string in Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending-anyof-1.md "check type definition")
#### acq\_\_acquisition\_type
`acq__acquisition_type`
* is optional
* Type: merged type ([Acquisition type (STRIP)](model-defs-properties-properties-acquisition-type-strip.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-acquisition-type-strip.md "airs_model#/$defs/Properties/properties/acq__acquisition_type")
##### acq\_\_acquisition\_type Type
merged type ([Acquisition type (STRIP)](model-defs-properties-properties-acquisition-type-strip.md))
any of
* [Untitled string in Item](model-defs-properties-properties-acquisition-type-strip-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-acquisition-type-strip-anyof-1.md "check type definition")
#### acq\_\_acquisition\_orbit
`acq__acquisition_orbit`
* is optional
* Type: merged type ([Acquisition orbit](model-defs-properties-properties-acquisition-orbit.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-acquisition-orbit.md "airs_model#/$defs/Properties/properties/acq__acquisition_orbit")
##### acq\_\_acquisition\_orbit Type
merged type ([Acquisition orbit](model-defs-properties-properties-acquisition-orbit.md))
any of
* [Untitled number in Item](model-defs-properties-properties-acquisition-orbit-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-acquisition-orbit-anyof-1.md "check type definition")
#### acq\_\_across\_track
`acq__across_track`
* is optional
* Type: merged type ([Across track angle](model-defs-properties-properties-across-track-angle.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-across-track-angle.md "airs_model#/$defs/Properties/properties/acq__across_track")
##### acq\_\_across\_track Type
merged type ([Across track angle](model-defs-properties-properties-across-track-angle.md))
any of
* [Untitled number in Item](model-defs-properties-properties-across-track-angle-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-across-track-angle-anyof-1.md "check type definition")
#### acq\_\_along\_track
`acq__along_track`
* is optional
* Type: merged type ([Along track angle](model-defs-properties-properties-along-track-angle.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-along-track-angle.md "airs_model#/$defs/Properties/properties/acq__along_track")
##### acq\_\_along\_track Type
merged type ([Along track angle](model-defs-properties-properties-along-track-angle.md))
any of
* [Untitled number in Item](model-defs-properties-properties-along-track-angle-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-along-track-angle-anyof-1.md "check type definition")
#### acq\_\_archiving\_date
`acq__archiving_date`
* is optional
* Type: merged type ([Archiving date](model-defs-properties-properties-archiving-date.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-archiving-date.md "airs_model#/$defs/Properties/properties/acq__archiving_date")
##### acq\_\_archiving\_date Type
merged type ([Archiving date](model-defs-properties-properties-archiving-date.md))
any of
* [Untitled string in Item](model-defs-properties-properties-archiving-date-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-archiving-date-anyof-1.md "check type definition")
#### acq\_\_download\_orbit
`acq__download_orbit`
* is optional
* Type: merged type ([Download orbit](model-defs-properties-properties-download-orbit.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-download-orbit.md "airs_model#/$defs/Properties/properties/acq__download_orbit")
##### acq\_\_download\_orbit Type
merged type ([Download orbit](model-defs-properties-properties-download-orbit.md))
any of
* [Untitled number in Item](model-defs-properties-properties-download-orbit-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-download-orbit-anyof-1.md "check type definition")
#### acq\_\_request\_id
`acq__request_id`
* is optional
* Type: merged type ([Original request identifier](model-defs-properties-properties-original-request-identifier.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-original-request-identifier.md "airs_model#/$defs/Properties/properties/acq__request_id")
##### acq\_\_request\_id Type
merged type ([Original request identifier](model-defs-properties-properties-original-request-identifier.md))
any of
* [Untitled string in Item](model-defs-properties-properties-original-request-identifier-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-original-request-identifier-anyof-1.md "check type definition")
#### acq\_\_quality\_average
`acq__quality_average`
* is optional
* Type: merged type ([Quality average](model-defs-properties-properties-quality-average.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-quality-average.md "airs_model#/$defs/Properties/properties/acq__quality_average")
##### acq\_\_quality\_average Type
merged type ([Quality average](model-defs-properties-properties-quality-average.md))
any of
* [Untitled number in Item](model-defs-properties-properties-quality-average-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-quality-average-anyof-1.md "check type definition")
#### acq\_\_quality\_computation
`acq__quality_computation`
* is optional
* Type: merged type ([Quality computation](model-defs-properties-properties-quality-computation.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-quality-computation.md "airs_model#/$defs/Properties/properties/acq__quality_computation")
##### acq\_\_quality\_computation Type
merged type ([Quality computation](model-defs-properties-properties-quality-computation.md))
any of
* [Untitled string in Item](model-defs-properties-properties-quality-computation-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-quality-computation-anyof-1.md "check type definition")
#### acq\_\_receiving\_station
`acq__receiving_station`
* is optional
* Type: merged type ([Receiving station](model-defs-properties-properties-receiving-station.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-receiving-station.md "airs_model#/$defs/Properties/properties/acq__receiving_station")
##### acq\_\_receiving\_station Type
merged type ([Receiving station](model-defs-properties-properties-receiving-station.md))
any of
* [Untitled string in Item](model-defs-properties-properties-receiving-station-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-receiving-station-anyof-1.md "check type definition")
#### acq\_\_reception\_date
`acq__reception_date`
* is optional
* Type: merged type ([Reception date](model-defs-properties-properties-reception-date.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-reception-date.md "airs_model#/$defs/Properties/properties/acq__reception_date")
##### acq\_\_reception\_date Type
merged type ([Reception date](model-defs-properties-properties-reception-date.md))
any of
* [Untitled string in Item](model-defs-properties-properties-reception-date-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-reception-date-anyof-1.md "check type definition")
#### acq\_\_spectral\_mode
`acq__spectral_mode`
* is optional
* Type: merged type ([Spectral mode](model-defs-properties-properties-spectral-mode.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-spectral-mode.md "airs_model#/$defs/Properties/properties/acq__spectral_mode")
##### acq\_\_spectral\_mode Type
merged type ([Spectral mode](model-defs-properties-properties-spectral-mode.md))
any of
* [Untitled string in Item](model-defs-properties-properties-spectral-mode-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-spectral-mode-anyof-1.md "check type definition")
#### sar\_\_instrument\_mode
`sar__instrument_mode`
* is optional
* Type: merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for "Wave mode" of Sentinel-1 and Envisat ASAR satellites.](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md "airs_model#/$defs/Properties/properties/sar__instrument_mode")
##### sar\_\_instrument\_mode Type
merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for "Wave mode" of Sentinel-1 and Envisat ASAR satellites.](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-1.md "check type definition")
#### sar\_\_frequency\_band
`sar__frequency_band`
* is optional
* Type: merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section "Common Frequency Band Names" for a list of accepted names.](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md "airs_model#/$defs/Properties/properties/sar__frequency_band")
##### sar\_\_frequency\_band Type
merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section "Common Frequency Band Names" for a list of accepted names.](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-1.md "check type definition")
#### sar\_\_center\_frequency
`sar__center_frequency`
* is optional
* Type: merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md "airs_model#/$defs/Properties/properties/sar__center_frequency")
##### sar\_\_center\_frequency Type
merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-1.md "check type definition")
#### sar\_\_polarizations
`sar__polarizations`
* is optional
* Type: merged type ([Any combination of polarizations.](model-defs-properties-properties-any-combination-of-polarizations.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-any-combination-of-polarizations.md "airs_model#/$defs/Properties/properties/sar__polarizations")
##### sar\_\_polarizations Type
merged type ([Any combination of polarizations.](model-defs-properties-properties-any-combination-of-polarizations.md))
any of
* [Untitled string in Item](model-defs-properties-properties-any-combination-of-polarizations-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-any-combination-of-polarizations-anyof-1.md "check type definition")
#### sar\_\_product\_type
`sar__product_type`
* is optional
* Type: merged type ([The product type, for example SSC, MGD, or SGC](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md "airs_model#/$defs/Properties/properties/sar__product_type")
##### sar\_\_product\_type Type
merged type ([The product type, for example SSC, MGD, or SGC](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))
any of
* [Untitled string in Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-1.md "check type definition")
#### sar\_\_resolution\_range
`sar__resolution_range`
* is optional
* Type: merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Properties/properties/sar__resolution_range")
##### sar\_\_resolution\_range Type
merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-1.md "check type definition")
#### sar\_\_resolution\_azimuth
`sar__resolution_azimuth`
* is optional
* Type: merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md "airs_model#/$defs/Properties/properties/sar__resolution_azimuth")
##### sar\_\_resolution\_azimuth Type
merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-1.md "check type definition")
#### sar\_\_pixel\_spacing\_range
`sar__pixel_spacing_range`
* is optional
* Type: merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Properties/properties/sar__pixel_spacing_range")
##### sar\_\_pixel\_spacing\_range Type
merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md "check type definition")
#### sar\_\_pixel\_spacing\_azimuth
`sar__pixel_spacing_azimuth`
* is optional
* Type: merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md "airs_model#/$defs/Properties/properties/sar__pixel_spacing_azimuth")
##### sar\_\_pixel\_spacing\_azimuth Type
merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md "check type definition")
#### sar\_\_looks\_range
`sar__looks_range`
* is optional
* Type: merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md "airs_model#/$defs/Properties/properties/sar__looks_range")
##### sar\_\_looks\_range Type
merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))
any of
* [Untitled number in Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-1.md "check type definition")
#### sar\_\_looks\_azimuth
`sar__looks_azimuth`
* is optional
* Type: merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md "airs_model#/$defs/Properties/properties/sar__looks_azimuth")
##### sar\_\_looks\_azimuth Type
merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))
any of
* [Untitled number in Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-1.md "check type definition")
#### sar\_\_looks\_equivalent\_number
`sar__looks_equivalent_number`
* is optional
* Type: merged type ([The equivalent number of looks (ENL).](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md "airs_model#/$defs/Properties/properties/sar__looks_equivalent_number")
##### sar\_\_looks\_equivalent\_number Type
merged type ([The equivalent number of looks (ENL).](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md))
any of
* [Untitled number in Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl-anyof-1.md "check type definition")
#### sar\_\_observation\_direction
`sar__observation_direction`
* is optional
* Type: merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md "airs_model#/$defs/Properties/properties/sar__observation_direction")
##### sar\_\_observation\_direction Type
merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))
any of
* [Untitled string in Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-1.md "check type definition")
#### proj\_\_epsg
`proj__epsg`
* is optional
* Type: merged type ([EPSG code of the datasource.](model-defs-properties-properties-epsg-code-of-the-datasource.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-epsg-code-of-the-datasource.md "airs_model#/$defs/Properties/properties/proj__epsg")
##### proj\_\_epsg Type
merged type ([EPSG code of the datasource.](model-defs-properties-properties-epsg-code-of-the-datasource.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-epsg-code-of-the-datasource-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-epsg-code-of-the-datasource-anyof-1.md "check type definition")
#### proj\_\_wkt2
`proj__wkt2`
* is optional
* Type: merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md "airs_model#/$defs/Properties/properties/proj__wkt2")
##### proj\_\_wkt2 Type
merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))
any of
* [Untitled string in Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-1.md "check type definition")
#### proj\_\_geometry
`proj__geometry`
* is optional
* Type: merged type ([Defines the footprint of this Item.](model-defs-properties-properties-defines-the-footprint-of-this-item.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-defines-the-footprint-of-this-item.md "airs_model#/$defs/Properties/properties/proj__geometry")
##### proj\_\_geometry Type
merged type ([Defines the footprint of this Item.](model-defs-properties-properties-defines-the-footprint-of-this-item.md))
any of
* [Untitled undefined type in Item](model-defs-properties-properties-defines-the-footprint-of-this-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-defines-the-footprint-of-this-item-anyof-1.md "check type definition")
#### proj\_\_bbox
`proj__bbox`
* is optional
* Type: merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md "airs_model#/$defs/Properties/properties/proj__bbox")
##### proj\_\_bbox Type
merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))
any of
* [Untitled array in Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-1.md "check type definition")
#### proj\_\_centroid
`proj__centroid`
* is optional
* Type: merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md "airs_model#/$defs/Properties/properties/proj__centroid")
##### proj\_\_centroid Type
merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))
any of
* [Untitled undefined type in Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-1.md "check type definition")
#### proj\_\_shape
`proj__shape`
* is optional
* Type: merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md "airs_model#/$defs/Properties/properties/proj__shape")
##### proj\_\_shape Type
merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))
any of
* [Untitled array in Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-1.md "check type definition")
#### proj\_\_transform
`proj__transform`
* is optional
* Type: merged type ([The affine transformation coefficients for the default grid.](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md "airs_model#/$defs/Properties/properties/proj__transform")
##### proj\_\_transform Type
merged type ([The affine transformation coefficients for the default grid.](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md))
any of
* [Untitled array in Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-1.md "check type definition")
#### generated\_\_has\_overview
`generated__has_overview`
* is optional
* Type: merged type ([Whether the item has an overview or not.](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md "airs_model#/$defs/Properties/properties/generated__has_overview")
##### generated\_\_has\_overview Type
merged type ([Whether the item has an overview or not.](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not-anyof-1.md "check type definition")
#### generated\_\_has\_thumbnail
`generated__has_thumbnail`
* is optional
* Type: merged type ([Whether the item has a thumbnail or not.](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md "airs_model#/$defs/Properties/properties/generated__has_thumbnail")
##### generated\_\_has\_thumbnail Type
merged type ([Whether the item has a thumbnail or not.](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not-anyof-1.md "check type definition")
#### generated\_\_has\_metadata
`generated__has_metadata`
* is optional
* Type: merged type ([Whether the item has a metadata file or not.](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md "airs_model#/$defs/Properties/properties/generated__has_metadata")
##### generated\_\_has\_metadata Type
merged type ([Whether the item has a metadata file or not.](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not-anyof-1.md "check type definition")
#### generated\_\_has\_data
`generated__has_data`
* is optional
* Type: merged type ([Whether the item has a data file or not.](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md "airs_model#/$defs/Properties/properties/generated__has_data")
##### generated\_\_has\_data Type
merged type ([Whether the item has a data file or not.](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not-anyof-1.md "check type definition")
#### generated\_\_has\_cog
`generated__has_cog`
* is optional
* Type: merged type ([Whether the item has a cog or not.](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md "airs_model#/$defs/Properties/properties/generated__has_cog")
##### generated\_\_has\_cog Type
merged type ([Whether the item has a cog or not.](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not-anyof-1.md "check type definition")
#### generated\_\_has\_zarr
`generated__has_zarr`
* is optional
* Type: merged type ([Whether the item has a zarr or not.](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md "airs_model#/$defs/Properties/properties/generated__has_zarr")
##### generated\_\_has\_zarr Type
merged type ([Whether the item has a zarr or not.](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md))
any of
* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not-anyof-1.md "check type definition")
#### generated\_\_date\_keywords
`generated__date_keywords`
* is optional
* Type: merged type ([A list of keywords indicating clues on the date](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md "airs_model#/$defs/Properties/properties/generated__date_keywords")
##### generated\_\_date\_keywords Type
merged type ([A list of keywords indicating clues on the date](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md))
any of
* [Untitled array in Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date-anyof-1.md "check type definition")
#### generated\_\_day\_of\_week
`generated__day_of_week`
* is optional
* Type: merged type ([Day of week.](model-defs-properties-properties-day-of-week.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-day-of-week.md "airs_model#/$defs/Properties/properties/generated__day_of_week")
##### generated\_\_day\_of\_week Type
merged type ([Day of week.](model-defs-properties-properties-day-of-week.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-day-of-week-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-day-of-week-anyof-1.md "check type definition")
#### generated\_\_day\_of\_year
`generated__day_of_year`
* is optional
* Type: merged type ([Day of year.](model-defs-properties-properties-day-of-year.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-day-of-year.md "airs_model#/$defs/Properties/properties/generated__day_of_year")
##### generated\_\_day\_of\_year Type
merged type ([Day of year.](model-defs-properties-properties-day-of-year.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-day-of-year-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-day-of-year-anyof-1.md "check type definition")
#### generated\_\_hour\_of\_day
`generated__hour_of_day`
* is optional
* Type: merged type ([Hour of day.](model-defs-properties-properties-hour-of-day.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-hour-of-day.md "airs_model#/$defs/Properties/properties/generated__hour_of_day")
##### generated\_\_hour\_of\_day Type
merged type ([Hour of day.](model-defs-properties-properties-hour-of-day.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-hour-of-day-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-hour-of-day-anyof-1.md "check type definition")
#### generated\_\_minute\_of\_day
`generated__minute_of_day`
* is optional
* Type: merged type ([Minute of day.](model-defs-properties-properties-minute-of-day.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-minute-of-day.md "airs_model#/$defs/Properties/properties/generated__minute_of_day")
##### generated\_\_minute\_of\_day Type
merged type ([Minute of day.](model-defs-properties-properties-minute-of-day.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-minute-of-day-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-minute-of-day-anyof-1.md "check type definition")
#### generated\_\_month
`generated__month`
* is optional
* Type: merged type ([Month](model-defs-properties-properties-month.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-month.md "airs_model#/$defs/Properties/properties/generated__month")
##### generated\_\_month Type
merged type ([Month](model-defs-properties-properties-month.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-month-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-month-anyof-1.md "check type definition")
#### generated\_\_year
`generated__year`
* is optional
* Type: merged type ([Year](model-defs-properties-properties-year.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-year.md "airs_model#/$defs/Properties/properties/generated__year")
##### generated\_\_year Type
merged type ([Year](model-defs-properties-properties-year.md))
any of
* [Untitled integer in Item](model-defs-properties-properties-year-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-year-anyof-1.md "check type definition")
#### generated\_\_season
`generated__season`
* is optional
* Type: merged type ([Season](model-defs-properties-properties-season.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-season.md "airs_model#/$defs/Properties/properties/generated__season")
##### generated\_\_season Type
merged type ([Season](model-defs-properties-properties-season.md))
any of
* [Untitled string in Item](model-defs-properties-properties-season-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-season-anyof-1.md "check type definition")
#### generated\_\_tltrbrbl
`generated__tltrbrbl`
* is optional
* Type: merged type ([The coordinates of the top left, top right, bottom right, bottom left corners of the item.](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md "airs_model#/$defs/Properties/properties/generated__tltrbrbl")
##### generated\_\_tltrbrbl Type
merged type ([The coordinates of the top left, top right, bottom right, bottom left corners of the item.](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md))
any of
* [Untitled array in Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item-anyof-1.md "check type definition")
#### generated\_\_band\_common\_names
`generated__band_common_names`
* is optional
* Type: merged type ([List of the band common names.](model-defs-properties-properties-list-of-the-band-common-names.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-list-of-the-band-common-names.md "airs_model#/$defs/Properties/properties/generated__band_common_names")
##### generated\_\_band\_common\_names Type
merged type ([List of the band common names.](model-defs-properties-properties-list-of-the-band-common-names.md))
any of
* [Untitled array in Item](model-defs-properties-properties-list-of-the-band-common-names-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-list-of-the-band-common-names-anyof-1.md "check type definition")
#### generated\_\_band\_names
`generated__band_names`
* is optional
* Type: merged type ([List of the band names.](model-defs-properties-properties-list-of-the-band-names.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-list-of-the-band-names.md "airs_model#/$defs/Properties/properties/generated__band_names")
##### generated\_\_band\_names Type
merged type ([List of the band names.](model-defs-properties-properties-list-of-the-band-names.md))
any of
* [Untitled array in Item](model-defs-properties-properties-list-of-the-band-names-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-list-of-the-band-names-anyof-1.md "check type definition")
#### generated\_\_geohash2
`generated__geohash2`
* is optional
* Type: merged type ([Geohash on the first two characters.](model-defs-properties-properties-geohash-on-the-first-two-characters.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-two-characters.md "airs_model#/$defs/Properties/properties/generated__geohash2")
##### generated\_\_geohash2 Type
merged type ([Geohash on the first two characters.](model-defs-properties-properties-geohash-on-the-first-two-characters.md))
any of
* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-two-characters-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-two-characters-anyof-1.md "check type definition")
#### generated\_\_geohash3
`generated__geohash3`
* is optional
* Type: merged type ([Geohash on the first three characters.](model-defs-properties-properties-geohash-on-the-first-three-characters.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-three-characters.md "airs_model#/$defs/Properties/properties/generated__geohash3")
##### generated\_\_geohash3 Type
merged type ([Geohash on the first three characters.](model-defs-properties-properties-geohash-on-the-first-three-characters.md))
any of
* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-three-characters-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-three-characters-anyof-1.md "check type definition")
#### generated\_\_geohash4
`generated__geohash4`
* is optional
* Type: merged type ([Geohash on the first four characters.](model-defs-properties-properties-geohash-on-the-first-four-characters.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-four-characters.md "airs_model#/$defs/Properties/properties/generated__geohash4")
##### generated\_\_geohash4 Type
merged type ([Geohash on the first four characters.](model-defs-properties-properties-geohash-on-the-first-four-characters.md))
any of
* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-four-characters-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-four-characters-anyof-1.md "check type definition")
#### generated\_\_geohash5
`generated__geohash5`
* is optional
* Type: merged type ([Geohash on the first five characters.](model-defs-properties-properties-geohash-on-the-first-five-characters.md))
* cannot be null
* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-five-characters.md "airs_model#/$defs/Properties/properties/generated__geohash5")
##### generated\_\_geohash5 Type
merged type ([Geohash on the first five characters.](model-defs-properties-properties-geohash-on-the-first-five-characters.md))
any of
* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-five-characters-anyof-0.md "check type definition")
* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-five-characters-anyof-1.md "check type definition")
#### Additional Properties
Additional properties are allowed and do not have to follow a specific schema
### Definitions group Raster
Reference this group by using
```json
{"$ref":"airs_model#/$defs/Raster"}
```
| Property | Type | Required | Nullable | Defined by |
| :-------------- | :------- | :------- | :------------- | :-------------------------------------------------------------------------------------- |
| [type](#type-1) | `object` | Required | cannot be null | [Item](model-defs-rastertype.md "airs_model#/$defs/Raster/properties/type") |
| [path](#path) | `string` | Required | cannot be null | [Item](model-defs-raster-properties-path.md "airs_model#/$defs/Raster/properties/path") |
| [id](#id-1) | `string` | Required | cannot be null | [Item](model-defs-raster-properties-id.md "airs_model#/$defs/Raster/properties/id") |
#### type
`type`
* is required
* Type: `object` ([RasterType](model-defs-rastertype.md))
* cannot be null
* defined in: [Item](model-defs-rastertype.md "airs_model#/$defs/Raster/properties/type")
##### type Type
`object` ([RasterType](model-defs-rastertype.md))
#### path
`path`
* is required
* Type: `string` ([Path](model-defs-raster-properties-path.md))
* cannot be null
* defined in: [Item](model-defs-raster-properties-path.md "airs_model#/$defs/Raster/properties/path")
##### path Type
`string` ([Path](model-defs-raster-properties-path.md))
#### id
`id`
* is required
* Type: `string` ([Id](model-defs-raster-properties-id.md))
* cannot be null
* defined in: [Item](model-defs-raster-properties-id.md "airs_model#/$defs/Raster/properties/id")
##### id Type
`string` ([Id](model-defs-raster-properties-id.md))
### Definitions group RasterType
Reference this group by using
```json
{"$ref":"airs_model#/$defs/RasterType"}
```
| Property | Type | Required | Nullable | Defined by |
| :---------------- | :------- | :------- | :------------- | :-------------------------------------------------------------------------------------------------- |
| [source](#source) | `string` | Required | cannot be null | [Item](model-defs-rastertype-properties-source.md "airs_model#/$defs/RasterType/properties/source") |
| [format](#format) | `string` | Required | cannot be null | [Item](model-defs-rastertype-properties-format.md "airs_model#/$defs/RasterType/properties/format") |
#### source
`source`
* is required
* Type: `string` ([Source](model-defs-rastertype-properties-source.md))
* cannot be null
* defined in: [Item](model-defs-rastertype-properties-source.md "airs_model#/$defs/RasterType/properties/source")
##### source Type
`string` ([Source](model-defs-rastertype-properties-source.md))
#### format
`format`
* is required
* Type: `string` ([Format](model-defs-rastertype-properties-format.md))
* cannot be null
* defined in: [Item](model-defs-rastertype-properties-format.md "airs_model#/$defs/RasterType/properties/format")
##### format Type
`string` ([Format](model-defs-rastertype-properties-format.md))
### Definitions group VariableType
Reference this group by using
```json
{"$ref":"airs_model#/$defs/VariableType"}
```
| Property | Type | Required | Nullable | Defined by |
| :------- | :--- | :------- | :------- | :--------- |
Raw data
{
"_id": null,
"home_page": null,
"name": "airsmodel",
"maintainer": null,
"docs_url": null,
"requires_python": ">=3.11",
"maintainer_email": null,
"keywords": null,
"author": "Gisa\u00efa",
"author_email": null,
"download_url": "https://files.pythonhosted.org/packages/66/4d/55d475e6c88e989f446d70a4fe64a21f89f959389b02753ad14daf2ac547/airsmodel-0.5.14.tar.gz",
"platform": null,
"description": "# AIRS Model\n\nThis package contains the data model for sending requests to ARLAS Item Registration Services.\n## Item Schema\n\n```txt\nairs_model\n```\n\n\n\n| Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Access Restrictions | Defined In |\n| :------------------ | :--------- | :------------- | :----------- | :---------------- | :-------------------- | :------------------ | :------------------------------------------------------------ |\n| Can be instantiated | No | Unknown status | No | Forbidden | Allowed | none | [model.schema.json](model.schema.json \"open original schema\") |\n\n### Item Type\n\n`object` ([Item](model.md))\n\n## Item Properties\n\n| Property | Type | Required | Nullable | Defined by |\n| :------------------------ | :----- | :------- | :------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| [collection](#collection) | Merged | Optional | cannot be null | [Item](model-properties-name-of-the-collection-the-item-belongs-to.md \"airs_model#/properties/collection\") |\n| [catalog](#catalog) | Merged | Optional | cannot be null | [Item](model-properties-name-of-the-catalog-the-item-belongs-to.md \"airs_model#/properties/catalog\") |\n| [id](#id) | Merged | Optional | cannot be null | [Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md \"airs_model#/properties/id\") |\n| [geometry](#geometry) | Merged | Optional | cannot be null | [Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md \"airs_model#/properties/geometry\") |\n| [bbox](#bbox) | Merged | Optional | cannot be null | [Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md \"airs_model#/properties/bbox\") |\n| [centroid](#centroid) | Merged | Optional | cannot be null | [Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md \"airs_model#/properties/centroid\") |\n| [assets](#assets) | Merged | Optional | cannot be null | [Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md \"airs_model#/properties/assets\") |\n| [properties](#properties) | Merged | Optional | cannot be null | [Item](model-properties-item-properties.md \"airs_model#/properties/properties\") |\n| Additional Properties | Any | Optional | can be null | |\n\n### collection\n\n\n\n`collection`\n\n* is optional\n\n* Type: merged type ([Name of the collection the item belongs to.](model-properties-name-of-the-collection-the-item-belongs-to.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-name-of-the-collection-the-item-belongs-to.md \"airs_model#/properties/collection\")\n\n#### collection Type\n\nmerged type ([Name of the collection the item belongs to.](model-properties-name-of-the-collection-the-item-belongs-to.md))\n\nany of\n\n* [Untitled string in Item](model-properties-name-of-the-collection-the-item-belongs-to-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-name-of-the-collection-the-item-belongs-to-anyof-1.md \"check type definition\")\n\n### catalog\n\n\n\n`catalog`\n\n* is optional\n\n* Type: merged type ([Name of the catalog the item belongs to.](model-properties-name-of-the-catalog-the-item-belongs-to.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-name-of-the-catalog-the-item-belongs-to.md \"airs_model#/properties/catalog\")\n\n#### catalog Type\n\nmerged type ([Name of the catalog the item belongs to.](model-properties-name-of-the-catalog-the-item-belongs-to.md))\n\nany of\n\n* [Untitled string in Item](model-properties-name-of-the-catalog-the-item-belongs-to-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-name-of-the-catalog-the-item-belongs-to-anyof-1.md \"check type definition\")\n\n### id\n\n\n\n`id`\n\n* is optional\n\n* Type: merged type ([Unique item identifier. Must be unique within the collection.](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md \"airs_model#/properties/id\")\n\n#### id Type\n\nmerged type ([Unique item identifier. Must be unique within the collection.](model-properties-unique-item-identifier-must-be-unique-within-the-collection.md))\n\nany of\n\n* [Untitled string in Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-unique-item-identifier-must-be-unique-within-the-collection-anyof-1.md \"check type definition\")\n\n### geometry\n\n\n\n`geometry`\n\n* is optional\n\n* Type: merged type ([Defines the full footprint of the asset represented by this item, formatted according to \\`RFC 7946, section 3.1 (GeoJSON) \\<https://tools.ietf.org/html/rfc7946>\\`\\_](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md \"airs_model#/properties/geometry\")\n\n#### geometry Type\n\nmerged type ([Defines the full footprint of the asset represented by this item, formatted according to \\`RFC 7946, section 3.1 (GeoJSON) \\<https://tools.ietf.org/html/rfc7946>\\`\\_](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_.md))\n\nany of\n\n* [Untitled object in Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-defines-the-full-footprint-of-the-asset-represented-by-this-item-formatted-according-to-rfc-7946-section-31-geojson-httpstoolsietforghtmlrfc7946_-anyof-1.md \"check type definition\")\n\n### bbox\n\n\n\n`bbox`\n\n* is optional\n\n* Type: merged type ([Bounding Box of the asset represented by this item using either 2D or 3D geometries. The length of the array must be 2\\*n where n is the number of dimensions. Could also be None in the case of a null geometry.](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md \"airs_model#/properties/bbox\")\n\n#### bbox Type\n\nmerged type ([Bounding Box of the asset represented by this item using either 2D or 3D geometries. The length of the array must be 2\\*n where n is the number of dimensions. Could also be None in the case of a null geometry.](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry.md))\n\nany of\n\n* [Untitled array in Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-bounding-box-of-the-asset-represented-by-this-item-using-either-2d-or-3d-geometries-the-length-of-the-array-must-be-2n-where-n-is-the-number-of-dimensions-could-also-be-none-in-the-case-of-a-null-geometry-anyof-1.md \"check type definition\")\n\n### centroid\n\n\n\n`centroid`\n\n* is optional\n\n* Type: merged type ([Coordinates (lon/lat) of the geometry's centroid.](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md \"airs_model#/properties/centroid\")\n\n#### centroid Type\n\nmerged type ([Coordinates (lon/lat) of the geometry's centroid.](model-properties-coordinates-lonlat-of-the-geometrys-centroid.md))\n\nany of\n\n* [Untitled array in Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-coordinates-lonlat-of-the-geometrys-centroid-anyof-1.md \"check type definition\")\n\n### assets\n\n\n\n`assets`\n\n* is optional\n\n* Type: merged type ([A dictionary mapping string keys to Asset objects. All Asset values in the dictionary will have their owner attribute set to the created Item.](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md \"airs_model#/properties/assets\")\n\n#### assets Type\n\nmerged type ([A dictionary mapping string keys to Asset objects. All Asset values in the dictionary will have their owner attribute set to the created Item.](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item.md))\n\nany of\n\n* [Untitled object in Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-a-dictionary-mapping-string-keys-to-asset-objects-all-asset-values-in-the-dictionary-will-have-their-owner-attribute-set-to-the-created-item-anyof-1.md \"check type definition\")\n\n### properties\n\n\n\n`properties`\n\n* is optional\n\n* Type: merged type ([Item properties](model-properties-item-properties.md))\n\n* cannot be null\n\n* defined in: [Item](model-properties-item-properties.md \"airs_model#/properties/properties\")\n\n#### properties Type\n\nmerged type ([Item properties](model-properties-item-properties.md))\n\nany of\n\n* [Properties](model-defs-properties.md \"check type definition\")\n\n* [Untitled null in Item](model-properties-item-properties-anyof-1.md \"check type definition\")\n\n### Additional Properties\n\nAdditional properties are allowed and do not have to follow a specific schema\n\n## Item Definitions\n\n### Definitions group Asset\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Asset\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :---------------------------------------------------------------- | :----- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| [name](#name) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md \"airs_model#/$defs/Asset/properties/name\") |\n| [size](#size) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-assets-size-in-bytes.md \"airs_model#/$defs/Asset/properties/size\") |\n| [href](#href) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-absolute-link-to-the-asset-object.md \"airs_model#/$defs/Asset/properties/href\") |\n| [asset\\_type](#asset_type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-type-of-data-resourcetype.md \"airs_model#/$defs/Asset/properties/asset_type\") |\n| [asset\\_format](#asset_format) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-data-format-assetformat.md \"airs_model#/$defs/Asset/properties/asset_format\") |\n| [storage\\_\\_requester\\_pays](#storage__requester_pays) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md \"airs_model#/$defs/Asset/properties/storage__requester_pays\") |\n| [storage\\_\\_tier](#storage__tier) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md \"airs_model#/$defs/Asset/properties/storage__tier\") |\n| [storage\\_\\_platform](#storage__platform) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md \"airs_model#/$defs/Asset/properties/storage__platform\") |\n| [storage\\_\\_region](#storage__region) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md \"airs_model#/$defs/Asset/properties/storage__region\") |\n| [airs\\_\\_managed](#airs__managed) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md \"airs_model#/$defs/Asset/properties/airs__managed\") |\n| [airs\\_\\_object\\_store\\_bucket](#airs__object_store_bucket) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md \"airs_model#/$defs/Asset/properties/airs__object_store_bucket\") |\n| [airs\\_\\_object\\_store\\_key](#airs__object_store_key) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-object-store-key-of-the-asset-object.md \"airs_model#/$defs/Asset/properties/airs__object_store_key\") |\n| [title](#title) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md \"airs_model#/$defs/Asset/properties/title\") |\n| [description](#description) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md \"airs_model#/$defs/Asset/properties/description\") |\n| [type](#type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md \"airs_model#/$defs/Asset/properties/type\") |\n| [roles](#roles) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md \"airs_model#/$defs/Asset/properties/roles\") |\n| [extra\\_fields](#extra_fields) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md \"airs_model#/$defs/Asset/properties/extra_fields\") |\n| [gsd](#gsd) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md \"airs_model#/$defs/Asset/properties/gsd\") |\n| [eo\\_\\_bands](#eo__bands) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md \"airs_model#/$defs/Asset/properties/eo__bands\") |\n| [sar\\_\\_instrument\\_mode](#sar__instrument_mode) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md \"airs_model#/$defs/Asset/properties/sar__instrument_mode\") |\n| [sar\\_\\_frequency\\_band](#sar__frequency_band) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md \"airs_model#/$defs/Asset/properties/sar__frequency_band\") |\n| [sar\\_\\_center\\_frequency](#sar__center_frequency) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md \"airs_model#/$defs/Asset/properties/sar__center_frequency\") |\n| [sar\\_\\_polarizations](#sar__polarizations) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-any-combination-of-polarizations.md \"airs_model#/$defs/Asset/properties/sar__polarizations\") |\n| [sar\\_\\_product\\_type](#sar__product_type) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md \"airs_model#/$defs/Asset/properties/sar__product_type\") |\n| [sar\\_\\_resolution\\_range](#sar__resolution_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Asset/properties/sar__resolution_range\") |\n| [sar\\_\\_resolution\\_azimuth](#sar__resolution_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Asset/properties/sar__resolution_azimuth\") |\n| [sar\\_\\_pixel\\_spacing\\_range](#sar__pixel_spacing_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Asset/properties/sar__pixel_spacing_range\") |\n| [sar\\_\\_pixel\\_spacing\\_azimuth](#sar__pixel_spacing_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Asset/properties/sar__pixel_spacing_azimuth\") |\n| [sar\\_\\_looks\\_range](#sar__looks_range) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md \"airs_model#/$defs/Asset/properties/sar__looks_range\") |\n| [sar\\_\\_looks\\_azimuth](#sar__looks_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md \"airs_model#/$defs/Asset/properties/sar__looks_azimuth\") |\n| [sar\\_\\_looks\\_equivalent\\_number](#sar__looks_equivalent_number) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md \"airs_model#/$defs/Asset/properties/sar__looks_equivalent_number\") |\n| [sar\\_\\_observation\\_direction](#sar__observation_direction) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md \"airs_model#/$defs/Asset/properties/sar__observation_direction\") |\n| [proj\\_\\_epsg](#proj__epsg) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-epsg-code-of-the-datasource.md \"airs_model#/$defs/Asset/properties/proj__epsg\") |\n| [proj\\_\\_wkt2](#proj__wkt2) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md \"airs_model#/$defs/Asset/properties/proj__wkt2\") |\n| [proj\\_\\_geometry](#proj__geometry) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-defines-the-footprint-of-this-item.md \"airs_model#/$defs/Asset/properties/proj__geometry\") |\n| [proj\\_\\_bbox](#proj__bbox) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md \"airs_model#/$defs/Asset/properties/proj__bbox\") |\n| [proj\\_\\_centroid](#proj__centroid) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md \"airs_model#/$defs/Asset/properties/proj__centroid\") |\n| [proj\\_\\_shape](#proj__shape) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md \"airs_model#/$defs/Asset/properties/proj__shape\") |\n| [proj\\_\\_transform](#proj__transform) | Merged | Optional | cannot be null | [Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md \"airs_model#/$defs/Asset/properties/proj__transform\") |\n| Additional Properties | Any | Optional | can be null | |\n\n#### name\n\n\n\n`name`\n\n* is optional\n\n* Type: merged type ([Asset's name. But be the same as the key in the \\`assets\\` dictionary.](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md \"airs_model#/$defs/Asset/properties/name\")\n\n##### name Type\n\nmerged type ([Asset's name. But be the same as the key in the \\`assets\\` dictionary.](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-assets-name-but-be-the-same-as-the-key-in-the-assets-dictionary-anyof-1.md \"check type definition\")\n\n#### size\n\n\n\n`size`\n\n* is optional\n\n* Type: merged type ([Asset's size in Bytes.](model-defs-asset-properties-assets-size-in-bytes.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-assets-size-in-bytes.md \"airs_model#/$defs/Asset/properties/size\")\n\n##### size Type\n\nmerged type ([Asset's size in Bytes.](model-defs-asset-properties-assets-size-in-bytes.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-asset-properties-assets-size-in-bytes-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-assets-size-in-bytes-anyof-1.md \"check type definition\")\n\n#### href\n\n\n\n`href`\n\n* is optional\n\n* Type: merged type ([Absolute link to the asset object.](model-defs-asset-properties-absolute-link-to-the-asset-object.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-absolute-link-to-the-asset-object.md \"airs_model#/$defs/Asset/properties/href\")\n\n##### href Type\n\nmerged type ([Absolute link to the asset object.](model-defs-asset-properties-absolute-link-to-the-asset-object.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-absolute-link-to-the-asset-object-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-absolute-link-to-the-asset-object-anyof-1.md \"check type definition\")\n\n#### asset\\_type\n\n\n\n`asset_type`\n\n* is optional\n\n* Type: merged type ([Type of data (ResourceType)](model-defs-asset-properties-type-of-data-resourcetype.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-type-of-data-resourcetype.md \"airs_model#/$defs/Asset/properties/asset_type\")\n\n##### asset\\_type Type\n\nmerged type ([Type of data (ResourceType)](model-defs-asset-properties-type-of-data-resourcetype.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-type-of-data-resourcetype-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-type-of-data-resourcetype-anyof-1.md \"check type definition\")\n\n#### asset\\_format\n\n\n\n`asset_format`\n\n* is optional\n\n* Type: merged type ([Data format (AssetFormat)](model-defs-asset-properties-data-format-assetformat.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-data-format-assetformat.md \"airs_model#/$defs/Asset/properties/asset_format\")\n\n##### asset\\_format Type\n\nmerged type ([Data format (AssetFormat)](model-defs-asset-properties-data-format-assetformat.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-data-format-assetformat-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-data-format-assetformat-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_requester\\_pays\n\n\n\n`storage__requester_pays`\n\n* is optional\n\n* Type: merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md \"airs_model#/$defs/Asset/properties/storage__requester_pays\")\n\n##### storage\\_\\_requester\\_pays Type\n\nmerged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_tier\n\n\n\n`storage__tier`\n\n* is optional\n\n* Type: merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md \"airs_model#/$defs/Asset/properties/storage__tier\")\n\n##### storage\\_\\_tier Type\n\nmerged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_platform\n\n\n\n`storage__platform`\n\n* is optional\n\n* Type: merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md \"airs_model#/$defs/Asset/properties/storage__platform\")\n\n##### storage\\_\\_platform Type\n\nmerged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_region\n\n\n\n`storage__region`\n\n* is optional\n\n* Type: merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md \"airs_model#/$defs/Asset/properties/storage__region\")\n\n##### storage\\_\\_region Type\n\nmerged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-1.md \"check type definition\")\n\n#### airs\\_\\_managed\n\n\n\n`airs__managed`\n\n* is optional\n\n* Type: merged type ([Whether the asset is managed by AIRS or not.](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md \"airs_model#/$defs/Asset/properties/airs__managed\")\n\n##### airs\\_\\_managed Type\n\nmerged type ([Whether the asset is managed by AIRS or not.](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-whether-the-asset-is-managed-by-airs-or-not-anyof-1.md \"check type definition\")\n\n##### airs\\_\\_managed Default Value\n\nThe default value is:\n\n```json\ntrue\n```\n\n#### airs\\_\\_object\\_store\\_bucket\n\n\n\n`airs__object_store_bucket`\n\n* is optional\n\n* Type: merged type ([Object store bucket for the asset object.](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md \"airs_model#/$defs/Asset/properties/airs__object_store_bucket\")\n\n##### airs\\_\\_object\\_store\\_bucket Type\n\nmerged type ([Object store bucket for the asset object.](model-defs-asset-properties-object-store-bucket-for-the-asset-object.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-object-store-bucket-for-the-asset-object-anyof-1.md \"check type definition\")\n\n#### airs\\_\\_object\\_store\\_key\n\n\n\n`airs__object_store_key`\n\n* is optional\n\n* Type: merged type ([Object store key of the asset object.](model-defs-asset-properties-object-store-key-of-the-asset-object.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-object-store-key-of-the-asset-object.md \"airs_model#/$defs/Asset/properties/airs__object_store_key\")\n\n##### airs\\_\\_object\\_store\\_key Type\n\nmerged type ([Object store key of the asset object.](model-defs-asset-properties-object-store-key-of-the-asset-object.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-object-store-key-of-the-asset-object-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-object-store-key-of-the-asset-object-anyof-1.md \"check type definition\")\n\n#### title\n\n\n\n`title`\n\n* is optional\n\n* Type: merged type ([Optional displayed title for clients and users.](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md \"airs_model#/$defs/Asset/properties/title\")\n\n##### title Type\n\nmerged type ([Optional displayed title for clients and users.](model-defs-asset-properties-optional-displayed-title-for-clients-and-users.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-optional-displayed-title-for-clients-and-users-anyof-1.md \"check type definition\")\n\n#### description\n\n\n\n`description`\n\n* is optional\n\n* Type: merged type ([A description of the Asset providing additional details, such as how it was processed or created. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md \"airs_model#/$defs/Asset/properties/description\")\n\n##### description Type\n\nmerged type ([A description of the Asset providing additional details, such as how it was processed or created. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-a-description-of-the-asset-providing-additional-details-such-as-how-it-was-processed-or-created-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-1.md \"check type definition\")\n\n#### type\n\n\n\n`type`\n\n* is optional\n\n* Type: merged type ([Optional description of the media type. Registered Media Types are preferred. See MediaType for common media types.](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md \"airs_model#/$defs/Asset/properties/type\")\n\n##### type Type\n\nmerged type ([Optional description of the media type. Registered Media Types are preferred. See MediaType for common media types.](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-optional-description-of-the-media-type-registered-media-types-are-preferred-see-mediatype-for-common-media-types-anyof-1.md \"check type definition\")\n\n#### roles\n\n\n\n`roles`\n\n* is optional\n\n* Type: merged type ([Optional, Semantic roles (i.e. thumbnail, overview, data, metadata) of the asset.](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md \"airs_model#/$defs/Asset/properties/roles\")\n\n##### roles Type\n\nmerged type ([Optional, Semantic roles (i.e. thumbnail, overview, data, metadata) of the asset.](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset.md))\n\nany of\n\n* [Untitled array in Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-optional-semantic-roles-ie-thumbnail-overview-data-metadata-of-the-asset-anyof-1.md \"check type definition\")\n\n#### extra\\_fields\n\n\n\n`extra_fields`\n\n* is optional\n\n* Type: merged type ([Optional, additional fields for this asset. This is used by extensions as a way to serialize and deserialize properties on asset object JSON.](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md \"airs_model#/$defs/Asset/properties/extra_fields\")\n\n##### extra\\_fields Type\n\nmerged type ([Optional, additional fields for this asset. This is used by extensions as a way to serialize and deserialize properties on asset object JSON.](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json.md))\n\nany of\n\n* [Untitled object in Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-optional-additional-fields-for-this-asset-this-is-used-by-extensions-as-a-way-to-serialize-and-deserialize-properties-on-asset-object-json-anyof-1.md \"check type definition\")\n\n#### gsd\n\n\n\n`gsd`\n\n* is optional\n\n* Type: merged type ([Ground Sampling Distance (resolution) of the asset](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md \"airs_model#/$defs/Asset/properties/gsd\")\n\n##### gsd Type\n\nmerged type ([Ground Sampling Distance (resolution) of the asset](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-ground-sampling-distance-resolution-of-the-asset-anyof-1.md \"check type definition\")\n\n#### eo\\_\\_bands\n\n\n\n`eo__bands`\n\n* is optional\n\n* Type: merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md \"airs_model#/$defs/Asset/properties/eo__bands\")\n\n##### eo\\_\\_bands Type\n\nmerged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))\n\nany of\n\n* [Untitled array in Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_instrument\\_mode\n\n\n\n`sar__instrument_mode`\n\n* is optional\n\n* Type: merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for \"Wave mode\" of Sentinel-1 and Envisat ASAR satellites.](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md \"airs_model#/$defs/Asset/properties/sar__instrument_mode\")\n\n##### sar\\_\\_instrument\\_mode Type\n\nmerged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for \"Wave mode\" of Sentinel-1 and Envisat ASAR satellites.](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_frequency\\_band\n\n\n\n`sar__frequency_band`\n\n* is optional\n\n* Type: merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section \"Common Frequency Band Names\" for a list of accepted names.](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md \"airs_model#/$defs/Asset/properties/sar__frequency_band\")\n\n##### sar\\_\\_frequency\\_band Type\n\nmerged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section \"Common Frequency Band Names\" for a list of accepted names.](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_center\\_frequency\n\n\n\n`sar__center_frequency`\n\n* is optional\n\n* Type: merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md \"airs_model#/$defs/Asset/properties/sar__center_frequency\")\n\n##### sar\\_\\_center\\_frequency Type\n\nmerged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_polarizations\n\n\n\n`sar__polarizations`\n\n* is optional\n\n* Type: merged type ([Any combination of polarizations.](model-defs-asset-properties-any-combination-of-polarizations.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-any-combination-of-polarizations.md \"airs_model#/$defs/Asset/properties/sar__polarizations\")\n\n##### sar\\_\\_polarizations Type\n\nmerged type ([Any combination of polarizations.](model-defs-asset-properties-any-combination-of-polarizations.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-any-combination-of-polarizations-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-any-combination-of-polarizations-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_product\\_type\n\n\n\n`sar__product_type`\n\n* is optional\n\n* Type: merged type ([The product type, for example SSC, MGD, or SGC](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md \"airs_model#/$defs/Asset/properties/sar__product_type\")\n\n##### sar\\_\\_product\\_type Type\n\nmerged type ([The product type, for example SSC, MGD, or SGC](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_resolution\\_range\n\n\n\n`sar__resolution_range`\n\n* is optional\n\n* Type: merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Asset/properties/sar__resolution_range\")\n\n##### sar\\_\\_resolution\\_range Type\n\nmerged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_resolution\\_azimuth\n\n\n\n`sar__resolution_azimuth`\n\n* is optional\n\n* Type: merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Asset/properties/sar__resolution_azimuth\")\n\n##### sar\\_\\_resolution\\_azimuth Type\n\nmerged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_pixel\\_spacing\\_range\n\n\n\n`sar__pixel_spacing_range`\n\n* is optional\n\n* Type: merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Asset/properties/sar__pixel_spacing_range\")\n\n##### sar\\_\\_pixel\\_spacing\\_range Type\n\nmerged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_pixel\\_spacing\\_azimuth\n\n\n\n`sar__pixel_spacing_azimuth`\n\n* is optional\n\n* Type: merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Asset/properties/sar__pixel_spacing_azimuth\")\n\n##### sar\\_\\_pixel\\_spacing\\_azimuth Type\n\nmerged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_range\n\n\n\n`sar__looks_range`\n\n* is optional\n\n* Type: merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md \"airs_model#/$defs/Asset/properties/sar__looks_range\")\n\n##### sar\\_\\_looks\\_range Type\n\nmerged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_azimuth\n\n\n\n`sar__looks_azimuth`\n\n* is optional\n\n* Type: merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md \"airs_model#/$defs/Asset/properties/sar__looks_azimuth\")\n\n##### sar\\_\\_looks\\_azimuth Type\n\nmerged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_equivalent\\_number\n\n\n\n`sar__looks_equivalent_number`\n\n* is optional\n\n* Type: merged type ([The equivalent number of looks (ENL).](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md \"airs_model#/$defs/Asset/properties/sar__looks_equivalent_number\")\n\n##### sar\\_\\_looks\\_equivalent\\_number Type\n\nmerged type ([The equivalent number of looks (ENL).](model-defs-asset-properties-the-equivalent-number-of-looks-enl.md))\n\nany of\n\n* [Untitled number in Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-equivalent-number-of-looks-enl-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_observation\\_direction\n\n\n\n`sar__observation_direction`\n\n* is optional\n\n* Type: merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md \"airs_model#/$defs/Asset/properties/sar__observation_direction\")\n\n##### sar\\_\\_observation\\_direction Type\n\nmerged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_epsg\n\n\n\n`proj__epsg`\n\n* is optional\n\n* Type: merged type ([EPSG code of the datasource.](model-defs-asset-properties-epsg-code-of-the-datasource.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-epsg-code-of-the-datasource.md \"airs_model#/$defs/Asset/properties/proj__epsg\")\n\n##### proj\\_\\_epsg Type\n\nmerged type ([EPSG code of the datasource.](model-defs-asset-properties-epsg-code-of-the-datasource.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-asset-properties-epsg-code-of-the-datasource-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-epsg-code-of-the-datasource-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_wkt2\n\n\n\n`proj__wkt2`\n\n* is optional\n\n* Type: merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md \"airs_model#/$defs/Asset/properties/proj__wkt2\")\n\n##### proj\\_\\_wkt2 Type\n\nmerged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))\n\nany of\n\n* [Untitled string in Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_geometry\n\n\n\n`proj__geometry`\n\n* is optional\n\n* Type: merged type ([Defines the footprint of this Item.](model-defs-asset-properties-defines-the-footprint-of-this-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-defines-the-footprint-of-this-item.md \"airs_model#/$defs/Asset/properties/proj__geometry\")\n\n##### proj\\_\\_geometry Type\n\nmerged type ([Defines the footprint of this Item.](model-defs-asset-properties-defines-the-footprint-of-this-item.md))\n\nany of\n\n* [Untitled undefined type in Item](model-defs-asset-properties-defines-the-footprint-of-this-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-defines-the-footprint-of-this-item-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_bbox\n\n\n\n`proj__bbox`\n\n* is optional\n\n* Type: merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md \"airs_model#/$defs/Asset/properties/proj__bbox\")\n\n##### proj\\_\\_bbox Type\n\nmerged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))\n\nany of\n\n* [Untitled array in Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_centroid\n\n\n\n`proj__centroid`\n\n* is optional\n\n* Type: merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md \"airs_model#/$defs/Asset/properties/proj__centroid\")\n\n##### proj\\_\\_centroid Type\n\nmerged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))\n\nany of\n\n* [Untitled undefined type in Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_shape\n\n\n\n`proj__shape`\n\n* is optional\n\n* Type: merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md \"airs_model#/$defs/Asset/properties/proj__shape\")\n\n##### proj\\_\\_shape Type\n\nmerged type ([Number of pixels in Y and X directions for the default grid.](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))\n\nany of\n\n* [Untitled array in Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_transform\n\n\n\n`proj__transform`\n\n* is optional\n\n* Type: merged type ([The affine transformation coefficients for the default grid.](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md \"airs_model#/$defs/Asset/properties/proj__transform\")\n\n##### proj\\_\\_transform Type\n\nmerged type ([The affine transformation coefficients for the default grid.](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid.md))\n\nany of\n\n* [Untitled array in Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-asset-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-1.md \"check type definition\")\n\n#### Additional Properties\n\nAdditional properties are allowed and do not have to follow a specific schema\n\n### Definitions group Band\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Band\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :--------------------------------------------- | :------- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| [name](#name-1) | `string` | Required | cannot be null | [Item](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md \"airs_model#/$defs/Band/properties/name\") |\n| [common\\_name](#common_name) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md \"airs_model#/$defs/Band/properties/common_name\") |\n| [description](#description-1) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md \"airs_model#/$defs/Band/properties/description\") |\n| [center\\_wavelength](#center_wavelength) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm.md \"airs_model#/$defs/Band/properties/center_wavelength\") |\n| [full\\_width\\_half\\_max](#full_width_half_max) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm.md \"airs_model#/$defs/Band/properties/full_width_half_max\") |\n| [solar\\_illumination](#solar_illumination) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md \"airs_model#/$defs/Band/properties/solar_illumination\") |\n| [quality\\_indicators](#quality_indicators) | Merged | Optional | cannot be null | [Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md \"airs_model#/$defs/Band/properties/quality_indicators\") |\n| Additional Properties | Any | Optional | can be null | |\n\n#### name\n\n\n\n`name`\n\n* is required\n\n* Type: `string` ([The name of the band (e.g., B01, B8, band2, red).](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md \"airs_model#/$defs/Band/properties/name\")\n\n##### name Type\n\n`string` ([The name of the band (e.g., B01, B8, band2, red).](model-defs-band-properties-the-name-of-the-band-eg-b01-b8-band2-red.md))\n\n##### name Constraints\n\n**maximum length**: the maximum number of characters for this string is: `300`\n\n#### common\\_name\n\n\n\n`common_name`\n\n* is optional\n\n* Type: merged type ([The name commonly used to refer to the band to make it easier to search for bands across instruments. See the list of accepted common names.](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md \"airs_model#/$defs/Band/properties/common_name\")\n\n##### common\\_name Type\n\nmerged type ([The name commonly used to refer to the band to make it easier to search for bands across instruments. See the list of accepted common names.](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names.md))\n\nany of\n\n* [Untitled string in Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-the-name-commonly-used-to-refer-to-the-band-to-make-it-easier-to-search-for-bands-across-instruments-see-the-list-of-accepted-common-names-anyof-1.md \"check type definition\")\n\n#### description\n\n\n\n`description`\n\n* is optional\n\n* Type: merged type ([Description to fully explain the band. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md \"airs_model#/$defs/Band/properties/description\")\n\n##### description Type\n\nmerged type ([Description to fully explain the band. CommonMark 0.29 syntax MAY be used for rich text representation.](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation.md))\n\nany of\n\n* [Untitled string in Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-description-to-fully-explain-the-band-commonmark-029-syntax-may-be-used-for-rich-text-representation-anyof-1.md \"check type definition\")\n\n#### center\\_wavelength\n\n\n\n`center_wavelength`\n\n* is optional\n\n* Type: merged type ([The center wavelength of the band, in micrometers (\u03bcm).](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm.md \"airs_model#/$defs/Band/properties/center_wavelength\")\n\n##### center\\_wavelength Type\n\nmerged type ([The center wavelength of the band, in micrometers (\u03bcm).](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm.md))\n\nany of\n\n* [Untitled number in Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-the-center-wavelength-of-the-band-in-micrometers-\u03bcm-anyof-1.md \"check type definition\")\n\n#### full\\_width\\_half\\_max\n\n\n\n`full_width_half_max`\n\n* is optional\n\n* Type: merged type ([Full width at half maximum (FWHM). The width of the band, as measured at half the maximum transmission, in micrometers (\u03bcm).](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm.md \"airs_model#/$defs/Band/properties/full_width_half_max\")\n\n##### full\\_width\\_half\\_max Type\n\nmerged type ([Full width at half maximum (FWHM). The width of the band, as measured at half the maximum transmission, in micrometers (\u03bcm).](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm.md))\n\nany of\n\n* [Untitled number in Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-full-width-at-half-maximum-fwhm-the-width-of-the-band-as-measured-at-half-the-maximum-transmission-in-micrometers-\u03bcm-anyof-1.md \"check type definition\")\n\n#### solar\\_illumination\n\n\n\n`solar_illumination`\n\n* is optional\n\n* Type: merged type ([The solar illumination of the band, as measured at half the maximum transmission, in W/m2/micrometers.](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md \"airs_model#/$defs/Band/properties/solar_illumination\")\n\n##### solar\\_illumination Type\n\nmerged type ([The solar illumination of the band, as measured at half the maximum transmission, in W/m2/micrometers.](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers.md))\n\nany of\n\n* [Untitled number in Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-the-solar-illumination-of-the-band-as-measured-at-half-the-maximum-transmission-in-wm2micrometers-anyof-1.md \"check type definition\")\n\n#### quality\\_indicators\n\n\n\n`quality_indicators`\n\n* is optional\n\n* Type: merged type ([Set of indicators for estimating the quality of the datacube variable (band).](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md \"airs_model#/$defs/Band/properties/quality_indicators\")\n\n##### quality\\_indicators Type\n\nmerged type ([Set of indicators for estimating the quality of the datacube variable (band).](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band.md))\n\nany of\n\n* [Indicators](model-defs-indicators.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-band-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-variable-band-anyof-1.md \"check type definition\")\n\n#### Additional Properties\n\nAdditional properties are allowed and do not have to follow a specific schema\n\n### Definitions group DimensionType\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/DimensionType\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :------- | :--- | :------- | :------- | :--------- |\n\n### Definitions group Group\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Group\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :------------------------------------------- | :----- | :------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| [timestamp](#timestamp) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-the-timestamp-of-this-temporal-group.md \"airs_model#/$defs/Group/properties/timestamp\") |\n| [rasters](#rasters) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md \"airs_model#/$defs/Group/properties/rasters\") |\n| [quality\\_indicators](#quality_indicators-1) | Merged | Optional | cannot be null | [Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md \"airs_model#/$defs/Group/properties/quality_indicators\") |\n\n#### timestamp\n\n\n\n`timestamp`\n\n* is optional\n\n* Type: merged type ([The timestamp of this temporal group.](model-defs-group-properties-the-timestamp-of-this-temporal-group.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-group-properties-the-timestamp-of-this-temporal-group.md \"airs_model#/$defs/Group/properties/timestamp\")\n\n##### timestamp Type\n\nmerged type ([The timestamp of this temporal group.](model-defs-group-properties-the-timestamp-of-this-temporal-group.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-group-properties-the-timestamp-of-this-temporal-group-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-group-properties-the-timestamp-of-this-temporal-group-anyof-1.md \"check type definition\")\n\n#### rasters\n\n\n\n`rasters`\n\n* is optional\n\n* Type: merged type ([The rasters belonging to this temporal group.](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md \"airs_model#/$defs/Group/properties/rasters\")\n\n##### rasters Type\n\nmerged type ([The rasters belonging to this temporal group.](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group.md))\n\nany of\n\n* [Untitled array in Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-group-properties-the-rasters-belonging-to-this-temporal-group-anyof-1.md \"check type definition\")\n\n#### quality\\_indicators\n\n\n\n`quality_indicators`\n\n* is optional\n\n* Type: merged type ([Set of indicators for estimating the quality of the datacube group. The indicators are group based.](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md \"airs_model#/$defs/Group/properties/quality_indicators\")\n\n##### quality\\_indicators Type\n\nmerged type ([Set of indicators for estimating the quality of the datacube group. The indicators are group based.](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based.md))\n\nany of\n\n* [Indicators](model-defs-indicators.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-group-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-group-the-indicators-are-group-based-anyof-1.md \"check type definition\")\n\n### Definitions group Indicators\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Indicators\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :------------------------------------- | :----- | :------- | :------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| [time\\_compacity](#time_compacity) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md \"airs_model#/$defs/Indicators/properties/time_compacity\") |\n| [spatial\\_coverage](#spatial_coverage) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md \"airs_model#/$defs/Indicators/properties/spatial_coverage\") |\n| [group\\_lightness](#group_lightness) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md \"airs_model#/$defs/Indicators/properties/group_lightness\") |\n| [time\\_regularity](#time_regularity) | Merged | Optional | cannot be null | [Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md \"airs_model#/$defs/Indicators/properties/time_regularity\") |\n\n#### time\\_compacity\n\n\n\n`time_compacity`\n\n* is optional\n\n* Type: merged type ([Indicates whether the temporal extend of the temporal slices (groups) are compact or not compared to the cube temporal extend. Computed as follow: 1-range(group rasters) / range(cube rasters).](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md \"airs_model#/$defs/Indicators/properties/time_compacity\")\n\n##### time\\_compacity Type\n\nmerged type ([Indicates whether the temporal extend of the temporal slices (groups) are compact or not compared to the cube temporal extend. Computed as follow: 1-range(group rasters) / range(cube rasters).](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters.md))\n\nany of\n\n* [Untitled number in Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-indicators-properties-indicates-whether-the-temporal-extend-of-the-temporal-slices-groups-are-compact-or-not-compared-to-the-cube-temporal-extend-computed-as-follow-1-rangegroup-rasters--rangecube-rasters-anyof-1.md \"check type definition\")\n\n#### spatial\\_coverage\n\n\n\n`spatial_coverage`\n\n* is optional\n\n* Type: merged type ([Indicates the proportion of the region of interest that is covered by the input rasters. Computed as follow: area(intersection(union(rasters),roi)) / area(roi))](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md \"airs_model#/$defs/Indicators/properties/spatial_coverage\")\n\n##### spatial\\_coverage Type\n\nmerged type ([Indicates the proportion of the region of interest that is covered by the input rasters. Computed as follow: area(intersection(union(rasters),roi)) / area(roi))](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi.md))\n\nany of\n\n* [Untitled number in Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-indicators-properties-indicates-the-proportion-of-the-region-of-interest-that-is-covered-by-the-input-rasters-computed-as-follow-areaintersectionunionrastersroi--arearoi-anyof-1.md \"check type definition\")\n\n#### group\\_lightness\n\n\n\n`group_lightness`\n\n* is optional\n\n* Type: merged type ([Indicates the proportion of non overlapping regions between the different input rasters. Computed as follow: area(intersection(union(rasters),roi)) / sum(area(intersection(raster, roi)))](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md \"airs_model#/$defs/Indicators/properties/group_lightness\")\n\n##### group\\_lightness Type\n\nmerged type ([Indicates the proportion of non overlapping regions between the different input rasters. Computed as follow: area(intersection(union(rasters),roi)) / sum(area(intersection(raster, roi)))](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi.md))\n\nany of\n\n* [Untitled number in Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-indicators-properties-indicates-the-proportion-of-non-overlapping-regions-between-the-different-input-rasters-computed-as-follow-areaintersectionunionrastersroi--sumareaintersectionraster-roi-anyof-1.md \"check type definition\")\n\n#### time\\_regularity\n\n\n\n`time_regularity`\n\n* is optional\n\n* Type: merged type ([Indicates the regularity of the extends between the temporal slices (groups). Computed as follow: 1-std(inter group temporal gaps)/avg(inter group temporal gaps)](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md \"airs_model#/$defs/Indicators/properties/time_regularity\")\n\n##### time\\_regularity Type\n\nmerged type ([Indicates the regularity of the extends between the temporal slices (groups). Computed as follow: 1-std(inter group temporal gaps)/avg(inter group temporal gaps)](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps.md))\n\nany of\n\n* [Untitled number in Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-indicators-properties-indicates-the-regularity-of-the-extends-between-the-temporal-slices-groups-computed-as-follow-1-stdinter-group-temporal-gapsavginter-group-temporal-gaps-anyof-1.md \"check type definition\")\n\n### Definitions group Properties\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Properties\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :------------------------------------------------------------------------ | :----- | :------- | :------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| [datetime](#datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md \"airs_model#/$defs/Properties/properties/datetime\") |\n| [start\\_datetime](#start_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md \"airs_model#/$defs/Properties/properties/start_datetime\") |\n| [end\\_datetime](#end_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md \"airs_model#/$defs/Properties/properties/end_datetime\") |\n| [keywords](#keywords) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-list-of-keywords.md \"airs_model#/$defs/Properties/properties/keywords\") |\n| [programme](#programme) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-programme.md \"airs_model#/$defs/Properties/properties/programme\") |\n| [constellation](#constellation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-constellation.md \"airs_model#/$defs/Properties/properties/constellation\") |\n| [satellite](#satellite) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-satellite.md \"airs_model#/$defs/Properties/properties/satellite\") |\n| [platform](#platform) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-satellite-platform.md \"airs_model#/$defs/Properties/properties/platform\") |\n| [instrument](#instrument) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-instrument.md \"airs_model#/$defs/Properties/properties/instrument\") |\n| [sensor](#sensor) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-sensor.md \"airs_model#/$defs/Properties/properties/sensor\") |\n| [sensor\\_mode](#sensor_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md \"airs_model#/$defs/Properties/properties/sensor_mode\") |\n| [sensor\\_type](#sensor_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-sensor.md \"airs_model#/$defs/Properties/properties/sensor_type\") |\n| [annotations](#annotations) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-human-annotations-for-the-item.md \"airs_model#/$defs/Properties/properties/annotations\") |\n| [gsd](#gsd-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-ground-sampling-distance-resolution.md \"airs_model#/$defs/Properties/properties/gsd\") |\n| [secondary\\_id](#secondary_id) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-secondary-identifier.md \"airs_model#/$defs/Properties/properties/secondary_id\") |\n| [data\\_type](#data_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-data.md \"airs_model#/$defs/Properties/properties/data_type\") |\n| [item\\_type](#item_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-data-resourcetype.md \"airs_model#/$defs/Properties/properties/item_type\") |\n| [item\\_format](#item_format) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-data-format-itemformat.md \"airs_model#/$defs/Properties/properties/item_format\") |\n| [main\\_asset\\_format](#main_asset_format) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md \"airs_model#/$defs/Properties/properties/main_asset_format\") |\n| [main\\_asset\\_name](#main_asset_name) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-name-of-the-main-asset-assetformat.md \"airs_model#/$defs/Properties/properties/main_asset_name\") |\n| [observation\\_type](#observation_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-type-of-observation-observationtype.md \"airs_model#/$defs/Properties/properties/observation_type\") |\n| [data\\_coverage](#data_coverage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-data-cover.md \"airs_model#/$defs/Properties/properties/data_coverage\") |\n| [water\\_coverage](#water_coverage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-water-cover.md \"airs_model#/$defs/Properties/properties/water_coverage\") |\n| [locations](#locations) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md \"airs_model#/$defs/Properties/properties/locations\") |\n| [create\\_datetime](#create_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md \"airs_model#/$defs/Properties/properties/create_datetime\") |\n| [update\\_datetime](#update_datetime) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md \"airs_model#/$defs/Properties/properties/update_datetime\") |\n| [view\\_\\_off\\_nadir](#view__off_nadir) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md \"airs_model#/$defs/Properties/properties/view__off_nadir\") |\n| [view\\_\\_incidence\\_angle](#view__incidence_angle) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md \"airs_model#/$defs/Properties/properties/view__incidence_angle\") |\n| [view\\_\\_azimuth](#view__azimuth) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md \"airs_model#/$defs/Properties/properties/view__azimuth\") |\n| [view\\_\\_sun\\_azimuth](#view__sun_azimuth) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md \"airs_model#/$defs/Properties/properties/view__sun_azimuth\") |\n| [view\\_\\_sun\\_elevation](#view__sun_elevation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md \"airs_model#/$defs/Properties/properties/view__sun_elevation\") |\n| [storage\\_\\_requester\\_pays](#storage__requester_pays-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md \"airs_model#/$defs/Properties/properties/storage__requester_pays\") |\n| [storage\\_\\_tier](#storage__tier-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md \"airs_model#/$defs/Properties/properties/storage__tier\") |\n| [storage\\_\\_platform](#storage__platform-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md \"airs_model#/$defs/Properties/properties/storage__platform\") |\n| [storage\\_\\_region](#storage__region-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md \"airs_model#/$defs/Properties/properties/storage__region\") |\n| [eo\\_\\_cloud\\_cover](#eo__cloud_cover) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-cloud-cover.md \"airs_model#/$defs/Properties/properties/eo__cloud_cover\") |\n| [eo\\_\\_snow\\_cover](#eo__snow_cover) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md \"airs_model#/$defs/Properties/properties/eo__snow_cover\") |\n| [eo\\_\\_bands](#eo__bands-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md \"airs_model#/$defs/Properties/properties/eo__bands\") |\n| [processing\\_\\_expression](#processing__expression) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md \"airs_model#/$defs/Properties/properties/processing__expression\") |\n| [processing\\_\\_lineage](#processing__lineage) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md \"airs_model#/$defs/Properties/properties/processing__lineage\") |\n| [processing\\_\\_level](#processing__level) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md \"airs_model#/$defs/Properties/properties/processing__level\") |\n| [processing\\_\\_facility](#processing__facility) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md \"airs_model#/$defs/Properties/properties/processing__facility\") |\n| [processing\\_\\_software](#processing__software) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md \"airs_model#/$defs/Properties/properties/processing__software\") |\n| [dc3\\_\\_quality\\_indicators](#dc3__quality_indicators) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md \"airs_model#/$defs/Properties/properties/dc3__quality_indicators\") |\n| [dc3\\_\\_composition](#dc3__composition) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md \"airs_model#/$defs/Properties/properties/dc3__composition\") |\n| [dc3\\_\\_number\\_of\\_chunks](#dc3__number_of_chunks) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md \"airs_model#/$defs/Properties/properties/dc3__number_of_chunks\") |\n| [dc3\\_\\_chunk\\_weight](#dc3__chunk_weight) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md \"airs_model#/$defs/Properties/properties/dc3__chunk_weight\") |\n| [dc3\\_\\_fill\\_ratio](#dc3__fill_ratio) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md \"airs_model#/$defs/Properties/properties/dc3__fill_ratio\") |\n| [cube\\_\\_dimensions](#cube__dimensions) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md \"airs_model#/$defs/Properties/properties/cube__dimensions\") |\n| [cube\\_\\_variables](#cube__variables) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md \"airs_model#/$defs/Properties/properties/cube__variables\") |\n| [acq\\_\\_acquisition\\_mode](#acq__acquisition_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-acquisition-mode.md \"airs_model#/$defs/Properties/properties/acq__acquisition_mode\") |\n| [acq\\_\\_acquisition\\_orbit\\_direction](#acq__acquisition_orbit_direction) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md \"airs_model#/$defs/Properties/properties/acq__acquisition_orbit_direction\") |\n| [acq\\_\\_acquisition\\_type](#acq__acquisition_type) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-type-strip.md \"airs_model#/$defs/Properties/properties/acq__acquisition_type\") |\n| [acq\\_\\_acquisition\\_orbit](#acq__acquisition_orbit) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-acquisition-orbit.md \"airs_model#/$defs/Properties/properties/acq__acquisition_orbit\") |\n| [acq\\_\\_across\\_track](#acq__across_track) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-across-track-angle.md \"airs_model#/$defs/Properties/properties/acq__across_track\") |\n| [acq\\_\\_along\\_track](#acq__along_track) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-along-track-angle.md \"airs_model#/$defs/Properties/properties/acq__along_track\") |\n| [acq\\_\\_archiving\\_date](#acq__archiving_date) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-archiving-date.md \"airs_model#/$defs/Properties/properties/acq__archiving_date\") |\n| [acq\\_\\_download\\_orbit](#acq__download_orbit) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-download-orbit.md \"airs_model#/$defs/Properties/properties/acq__download_orbit\") |\n| [acq\\_\\_request\\_id](#acq__request_id) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-original-request-identifier.md \"airs_model#/$defs/Properties/properties/acq__request_id\") |\n| [acq\\_\\_quality\\_average](#acq__quality_average) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-quality-average.md \"airs_model#/$defs/Properties/properties/acq__quality_average\") |\n| [acq\\_\\_quality\\_computation](#acq__quality_computation) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-quality-computation.md \"airs_model#/$defs/Properties/properties/acq__quality_computation\") |\n| [acq\\_\\_receiving\\_station](#acq__receiving_station) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-receiving-station.md \"airs_model#/$defs/Properties/properties/acq__receiving_station\") |\n| [acq\\_\\_reception\\_date](#acq__reception_date) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-reception-date.md \"airs_model#/$defs/Properties/properties/acq__reception_date\") |\n| [acq\\_\\_spectral\\_mode](#acq__spectral_mode) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-spectral-mode.md \"airs_model#/$defs/Properties/properties/acq__spectral_mode\") |\n| [sar\\_\\_instrument\\_mode](#sar__instrument_mode-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md \"airs_model#/$defs/Properties/properties/sar__instrument_mode\") |\n| [sar\\_\\_frequency\\_band](#sar__frequency_band-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md \"airs_model#/$defs/Properties/properties/sar__frequency_band\") |\n| [sar\\_\\_center\\_frequency](#sar__center_frequency-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md \"airs_model#/$defs/Properties/properties/sar__center_frequency\") |\n| [sar\\_\\_polarizations](#sar__polarizations-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-any-combination-of-polarizations.md \"airs_model#/$defs/Properties/properties/sar__polarizations\") |\n| [sar\\_\\_product\\_type](#sar__product_type-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md \"airs_model#/$defs/Properties/properties/sar__product_type\") |\n| [sar\\_\\_resolution\\_range](#sar__resolution_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Properties/properties/sar__resolution_range\") |\n| [sar\\_\\_resolution\\_azimuth](#sar__resolution_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Properties/properties/sar__resolution_azimuth\") |\n| [sar\\_\\_pixel\\_spacing\\_range](#sar__pixel_spacing_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Properties/properties/sar__pixel_spacing_range\") |\n| [sar\\_\\_pixel\\_spacing\\_azimuth](#sar__pixel_spacing_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Properties/properties/sar__pixel_spacing_azimuth\") |\n| [sar\\_\\_looks\\_range](#sar__looks_range-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md \"airs_model#/$defs/Properties/properties/sar__looks_range\") |\n| [sar\\_\\_looks\\_azimuth](#sar__looks_azimuth-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md \"airs_model#/$defs/Properties/properties/sar__looks_azimuth\") |\n| [sar\\_\\_looks\\_equivalent\\_number](#sar__looks_equivalent_number-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md \"airs_model#/$defs/Properties/properties/sar__looks_equivalent_number\") |\n| [sar\\_\\_observation\\_direction](#sar__observation_direction-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md \"airs_model#/$defs/Properties/properties/sar__observation_direction\") |\n| [proj\\_\\_epsg](#proj__epsg-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-epsg-code-of-the-datasource.md \"airs_model#/$defs/Properties/properties/proj__epsg\") |\n| [proj\\_\\_wkt2](#proj__wkt2-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md \"airs_model#/$defs/Properties/properties/proj__wkt2\") |\n| [proj\\_\\_geometry](#proj__geometry-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-defines-the-footprint-of-this-item.md \"airs_model#/$defs/Properties/properties/proj__geometry\") |\n| [proj\\_\\_bbox](#proj__bbox-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md \"airs_model#/$defs/Properties/properties/proj__bbox\") |\n| [proj\\_\\_centroid](#proj__centroid-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md \"airs_model#/$defs/Properties/properties/proj__centroid\") |\n| [proj\\_\\_shape](#proj__shape-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md \"airs_model#/$defs/Properties/properties/proj__shape\") |\n| [proj\\_\\_transform](#proj__transform-1) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md \"airs_model#/$defs/Properties/properties/proj__transform\") |\n| [generated\\_\\_has\\_overview](#generated__has_overview) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_overview\") |\n| [generated\\_\\_has\\_thumbnail](#generated__has_thumbnail) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_thumbnail\") |\n| [generated\\_\\_has\\_metadata](#generated__has_metadata) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_metadata\") |\n| [generated\\_\\_has\\_data](#generated__has_data) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_data\") |\n| [generated\\_\\_has\\_cog](#generated__has_cog) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_cog\") |\n| [generated\\_\\_has\\_zarr](#generated__has_zarr) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_zarr\") |\n| [generated\\_\\_date\\_keywords](#generated__date_keywords) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md \"airs_model#/$defs/Properties/properties/generated__date_keywords\") |\n| [generated\\_\\_day\\_of\\_week](#generated__day_of_week) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-day-of-week.md \"airs_model#/$defs/Properties/properties/generated__day_of_week\") |\n| [generated\\_\\_day\\_of\\_year](#generated__day_of_year) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-day-of-year.md \"airs_model#/$defs/Properties/properties/generated__day_of_year\") |\n| [generated\\_\\_hour\\_of\\_day](#generated__hour_of_day) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-hour-of-day.md \"airs_model#/$defs/Properties/properties/generated__hour_of_day\") |\n| [generated\\_\\_minute\\_of\\_day](#generated__minute_of_day) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-minute-of-day.md \"airs_model#/$defs/Properties/properties/generated__minute_of_day\") |\n| [generated\\_\\_month](#generated__month) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-month.md \"airs_model#/$defs/Properties/properties/generated__month\") |\n| [generated\\_\\_year](#generated__year) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-year.md \"airs_model#/$defs/Properties/properties/generated__year\") |\n| [generated\\_\\_season](#generated__season) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-season.md \"airs_model#/$defs/Properties/properties/generated__season\") |\n| [generated\\_\\_tltrbrbl](#generated__tltrbrbl) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md \"airs_model#/$defs/Properties/properties/generated__tltrbrbl\") |\n| [generated\\_\\_band\\_common\\_names](#generated__band_common_names) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-the-band-common-names.md \"airs_model#/$defs/Properties/properties/generated__band_common_names\") |\n| [generated\\_\\_band\\_names](#generated__band_names) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-list-of-the-band-names.md \"airs_model#/$defs/Properties/properties/generated__band_names\") |\n| [generated\\_\\_geohash2](#generated__geohash2) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-two-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash2\") |\n| [generated\\_\\_geohash3](#generated__geohash3) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-three-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash3\") |\n| [generated\\_\\_geohash4](#generated__geohash4) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-four-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash4\") |\n| [generated\\_\\_geohash5](#generated__geohash5) | Merged | Optional | cannot be null | [Item](model-defs-properties-properties-geohash-on-the-first-five-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash5\") |\n| Additional Properties | Any | Optional | can be null | |\n\n#### datetime\n\n\n\n`datetime`\n\n* is optional\n\n* Type: merged type ([datetime associated with this item. If None, a start\\_datetime and end\\_datetime must be supplied.](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md \"airs_model#/$defs/Properties/properties/datetime\")\n\n##### datetime Type\n\nmerged type ([datetime associated with this item. If None, a start\\_datetime and end\\_datetime must be supplied.](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-datetime-associated-with-this-item-if-none-a-start_datetime-and-end_datetime-must-be-supplied-anyof-1.md \"check type definition\")\n\n#### start\\_datetime\n\n\n\n`start_datetime`\n\n* is optional\n\n* Type: merged type ([Optional start datetime, part of common metadata. This value will override any start\\_datetime key in properties.](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md \"airs_model#/$defs/Properties/properties/start_datetime\")\n\n##### start\\_datetime Type\n\nmerged type ([Optional start datetime, part of common metadata. This value will override any start\\_datetime key in properties.](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-optional-start-datetime-part-of-common-metadata-this-value-will-override-any-start_datetime-key-in-properties-anyof-1.md \"check type definition\")\n\n#### end\\_datetime\n\n\n\n`end_datetime`\n\n* is optional\n\n* Type: merged type ([Optional end datetime, part of common metadata. This value will override any end\\_datetime key in properties.](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md \"airs_model#/$defs/Properties/properties/end_datetime\")\n\n##### end\\_datetime Type\n\nmerged type ([Optional end datetime, part of common metadata. This value will override any end\\_datetime key in properties.](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-optional-end-datetime-part-of-common-metadata-this-value-will-override-any-end_datetime-key-in-properties-anyof-1.md \"check type definition\")\n\n#### keywords\n\n\n\n`keywords`\n\n* is optional\n\n* Type: merged type ([A list of keywords](model-defs-properties-properties-a-list-of-keywords.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-a-list-of-keywords.md \"airs_model#/$defs/Properties/properties/keywords\")\n\n##### keywords Type\n\nmerged type ([A list of keywords](model-defs-properties-properties-a-list-of-keywords.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-a-list-of-keywords-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-a-list-of-keywords-anyof-1.md \"check type definition\")\n\n#### programme\n\n\n\n`programme`\n\n* is optional\n\n* Type: merged type ([Name of the programme](model-defs-properties-properties-name-of-the-programme.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-programme.md \"airs_model#/$defs/Properties/properties/programme\")\n\n##### programme Type\n\nmerged type ([Name of the programme](model-defs-properties-properties-name-of-the-programme.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-programme-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-programme-anyof-1.md \"check type definition\")\n\n#### constellation\n\n\n\n`constellation`\n\n* is optional\n\n* Type: merged type ([Name of the constellation](model-defs-properties-properties-name-of-the-constellation.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-constellation.md \"airs_model#/$defs/Properties/properties/constellation\")\n\n##### constellation Type\n\nmerged type ([Name of the constellation](model-defs-properties-properties-name-of-the-constellation.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-constellation-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-constellation-anyof-1.md \"check type definition\")\n\n#### satellite\n\n\n\n`satellite`\n\n* is optional\n\n* Type: merged type ([Name of the satellite](model-defs-properties-properties-name-of-the-satellite.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-satellite.md \"airs_model#/$defs/Properties/properties/satellite\")\n\n##### satellite Type\n\nmerged type ([Name of the satellite](model-defs-properties-properties-name-of-the-satellite.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-satellite-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-satellite-anyof-1.md \"check type definition\")\n\n#### platform\n\n\n\n`platform`\n\n* is optional\n\n* Type: merged type ([Name of the satellite platform](model-defs-properties-properties-name-of-the-satellite-platform.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-satellite-platform.md \"airs_model#/$defs/Properties/properties/platform\")\n\n##### platform Type\n\nmerged type ([Name of the satellite platform](model-defs-properties-properties-name-of-the-satellite-platform.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-satellite-platform-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-satellite-platform-anyof-1.md \"check type definition\")\n\n#### instrument\n\n\n\n`instrument`\n\n* is optional\n\n* Type: merged type ([Name of the instrument](model-defs-properties-properties-name-of-the-instrument.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-instrument.md \"airs_model#/$defs/Properties/properties/instrument\")\n\n##### instrument Type\n\nmerged type ([Name of the instrument](model-defs-properties-properties-name-of-the-instrument.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-instrument-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-instrument-anyof-1.md \"check type definition\")\n\n#### sensor\n\n\n\n`sensor`\n\n* is optional\n\n* Type: merged type ([Name of the sensor](model-defs-properties-properties-name-of-the-sensor.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-sensor.md \"airs_model#/$defs/Properties/properties/sensor\")\n\n##### sensor Type\n\nmerged type ([Name of the sensor](model-defs-properties-properties-name-of-the-sensor.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-sensor-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-sensor-anyof-1.md \"check type definition\")\n\n#### sensor\\_mode\n\n\n\n`sensor_mode`\n\n* is optional\n\n* Type: merged type ([Mode of the sensor during acquisition](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md \"airs_model#/$defs/Properties/properties/sensor_mode\")\n\n##### sensor\\_mode Type\n\nmerged type ([Mode of the sensor during acquisition](model-defs-properties-properties-mode-of-the-sensor-during-acquisition.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-mode-of-the-sensor-during-acquisition-anyof-1.md \"check type definition\")\n\n#### sensor\\_type\n\n\n\n`sensor_type`\n\n* is optional\n\n* Type: merged type ([Type of sensor](model-defs-properties-properties-type-of-sensor.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-type-of-sensor.md \"airs_model#/$defs/Properties/properties/sensor_type\")\n\n##### sensor\\_type Type\n\nmerged type ([Type of sensor](model-defs-properties-properties-type-of-sensor.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-type-of-sensor-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-type-of-sensor-anyof-1.md \"check type definition\")\n\n#### annotations\n\n\n\n`annotations`\n\n* is optional\n\n* Type: merged type ([Human annotations for the item](model-defs-properties-properties-human-annotations-for-the-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-human-annotations-for-the-item.md \"airs_model#/$defs/Properties/properties/annotations\")\n\n##### annotations Type\n\nmerged type ([Human annotations for the item](model-defs-properties-properties-human-annotations-for-the-item.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-human-annotations-for-the-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-human-annotations-for-the-item-anyof-1.md \"check type definition\")\n\n#### gsd\n\n\n\n`gsd`\n\n* is optional\n\n* Type: merged type ([Ground Sampling Distance (resolution)](model-defs-properties-properties-ground-sampling-distance-resolution.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-ground-sampling-distance-resolution.md \"airs_model#/$defs/Properties/properties/gsd\")\n\n##### gsd Type\n\nmerged type ([Ground Sampling Distance (resolution)](model-defs-properties-properties-ground-sampling-distance-resolution.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-ground-sampling-distance-resolution-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-ground-sampling-distance-resolution-anyof-1.md \"check type definition\")\n\n#### secondary\\_id\n\n\n\n`secondary_id`\n\n* is optional\n\n* Type: merged type ([Secondary identifier](model-defs-properties-properties-secondary-identifier.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-secondary-identifier.md \"airs_model#/$defs/Properties/properties/secondary_id\")\n\n##### secondary\\_id Type\n\nmerged type ([Secondary identifier](model-defs-properties-properties-secondary-identifier.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-secondary-identifier-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-secondary-identifier-anyof-1.md \"check type definition\")\n\n#### data\\_type\n\n\n\n`data_type`\n\n* is optional\n\n* Type: merged type ([Type of data](model-defs-properties-properties-type-of-data.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-type-of-data.md \"airs_model#/$defs/Properties/properties/data_type\")\n\n##### data\\_type Type\n\nmerged type ([Type of data](model-defs-properties-properties-type-of-data.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-type-of-data-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-type-of-data-anyof-1.md \"check type definition\")\n\n#### item\\_type\n\n\n\n`item_type`\n\n* is optional\n\n* Type: merged type ([Type of data (ResourceType)](model-defs-properties-properties-type-of-data-resourcetype.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-type-of-data-resourcetype.md \"airs_model#/$defs/Properties/properties/item_type\")\n\n##### item\\_type Type\n\nmerged type ([Type of data (ResourceType)](model-defs-properties-properties-type-of-data-resourcetype.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-type-of-data-resourcetype-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-type-of-data-resourcetype-anyof-1.md \"check type definition\")\n\n#### item\\_format\n\n\n\n`item_format`\n\n* is optional\n\n* Type: merged type ([Data format (ItemFormat)](model-defs-properties-properties-data-format-itemformat.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-data-format-itemformat.md \"airs_model#/$defs/Properties/properties/item_format\")\n\n##### item\\_format Type\n\nmerged type ([Data format (ItemFormat)](model-defs-properties-properties-data-format-itemformat.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-data-format-itemformat-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-data-format-itemformat-anyof-1.md \"check type definition\")\n\n#### main\\_asset\\_format\n\n\n\n`main_asset_format`\n\n* is optional\n\n* Type: merged type ([Data format of the main asset (AssetFormat)](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md \"airs_model#/$defs/Properties/properties/main_asset_format\")\n\n##### main\\_asset\\_format Type\n\nmerged type ([Data format of the main asset (AssetFormat)](model-defs-properties-properties-data-format-of-the-main-asset-assetformat.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-data-format-of-the-main-asset-assetformat-anyof-1.md \"check type definition\")\n\n#### main\\_asset\\_name\n\n\n\n`main_asset_name`\n\n* is optional\n\n* Type: merged type ([Name of the main asset (AssetFormat)](model-defs-properties-properties-name-of-the-main-asset-assetformat.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-name-of-the-main-asset-assetformat.md \"airs_model#/$defs/Properties/properties/main_asset_name\")\n\n##### main\\_asset\\_name Type\n\nmerged type ([Name of the main asset (AssetFormat)](model-defs-properties-properties-name-of-the-main-asset-assetformat.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-name-of-the-main-asset-assetformat-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-name-of-the-main-asset-assetformat-anyof-1.md \"check type definition\")\n\n#### observation\\_type\n\n\n\n`observation_type`\n\n* is optional\n\n* Type: merged type ([Type of observation (ObservationType)](model-defs-properties-properties-type-of-observation-observationtype.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-type-of-observation-observationtype.md \"airs_model#/$defs/Properties/properties/observation_type\")\n\n##### observation\\_type Type\n\nmerged type ([Type of observation (ObservationType)](model-defs-properties-properties-type-of-observation-observationtype.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-type-of-observation-observationtype-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-type-of-observation-observationtype-anyof-1.md \"check type definition\")\n\n#### data\\_coverage\n\n\n\n`data_coverage`\n\n* is optional\n\n* Type: merged type ([Estimate of data cover](model-defs-properties-properties-estimate-of-data-cover.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-estimate-of-data-cover.md \"airs_model#/$defs/Properties/properties/data_coverage\")\n\n##### data\\_coverage Type\n\nmerged type ([Estimate of data cover](model-defs-properties-properties-estimate-of-data-cover.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-estimate-of-data-cover-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-estimate-of-data-cover-anyof-1.md \"check type definition\")\n\n#### water\\_coverage\n\n\n\n`water_coverage`\n\n* is optional\n\n* Type: merged type ([Estimate of water cover](model-defs-properties-properties-estimate-of-water-cover.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-estimate-of-water-cover.md \"airs_model#/$defs/Properties/properties/water_coverage\")\n\n##### water\\_coverage Type\n\nmerged type ([Estimate of water cover](model-defs-properties-properties-estimate-of-water-cover.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-estimate-of-water-cover-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-estimate-of-water-cover-anyof-1.md \"check type definition\")\n\n#### locations\n\n\n\n`locations`\n\n* is optional\n\n* Type: merged type ([List of locations covered by the item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md \"airs_model#/$defs/Properties/properties/locations\")\n\n##### locations Type\n\nmerged type ([List of locations covered by the item](model-defs-properties-properties-list-of-locations-covered-by-the-item.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-list-of-locations-covered-by-the-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-list-of-locations-covered-by-the-item-anyof-1.md \"check type definition\")\n\n#### create\\_datetime\n\n\n\n`create_datetime`\n\n* is optional\n\n* Type: merged type ([Date of item creation in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md \"airs_model#/$defs/Properties/properties/create_datetime\")\n\n##### create\\_datetime Type\n\nmerged type ([Date of item creation in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-date-of-item-creation-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-1.md \"check type definition\")\n\n#### update\\_datetime\n\n\n\n`update_datetime`\n\n* is optional\n\n* Type: merged type ([Update date of the item in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md \"airs_model#/$defs/Properties/properties/update_datetime\")\n\n##### update\\_datetime Type\n\nmerged type ([Update date of the item in the catalog, managed by the ARLAS Item Registration Service](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-update-date-of-the-item-in-the-catalog-managed-by-the-arlas-item-registration-service-anyof-1.md \"check type definition\")\n\n#### view\\_\\_off\\_nadir\n\n\n\n`view__off_nadir`\n\n* is optional\n\n* Type: merged type ([The angle from the sensor between nadir (straight down) and the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md \"airs_model#/$defs/Properties/properties/view__off_nadir\")\n\n##### view\\_\\_off\\_nadir Type\n\nmerged type ([The angle from the sensor between nadir (straight down) and the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-angle-from-the-sensor-between-nadir-straight-down-and-the-scene-center-measured-in-degrees-0-90-anyof-1.md \"check type definition\")\n\n#### view\\_\\_incidence\\_angle\n\n\n\n`view__incidence_angle`\n\n* is optional\n\n* Type: merged type ([The incidence angle is the angle between the vertical (normal) to the intercepting surface and the line of sight back to the satellite at the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md \"airs_model#/$defs/Properties/properties/view__incidence_angle\")\n\n##### view\\_\\_incidence\\_angle Type\n\nmerged type ([The incidence angle is the angle between the vertical (normal) to the intercepting surface and the line of sight back to the satellite at the scene center. Measured in degrees (0-90).](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-incidence-angle-is-the-angle-between-the-vertical-normal-to-the-intercepting-surface-and-the-line-of-sight-back-to-the-satellite-at-the-scene-center-measured-in-degrees-0-90-anyof-1.md \"check type definition\")\n\n#### view\\_\\_azimuth\n\n\n\n`view__azimuth`\n\n* is optional\n\n* Type: merged type ([Viewing azimuth angle. The angle measured from the sub-satellite point (point on the ground below the platform) between the scene center and true north. Measured clockwise from north in degrees (0-360).](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md \"airs_model#/$defs/Properties/properties/view__azimuth\")\n\n##### view\\_\\_azimuth Type\n\nmerged type ([Viewing azimuth angle. The angle measured from the sub-satellite point (point on the ground below the platform) between the scene center and true north. Measured clockwise from north in degrees (0-360).](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-viewing-azimuth-angle-the-angle-measured-from-the-sub-satellite-point-point-on-the-ground-below-the-platform-between-the-scene-center-and-true-north-measured-clockwise-from-north-in-degrees-0-360-anyof-1.md \"check type definition\")\n\n#### view\\_\\_sun\\_azimuth\n\n\n\n`view__sun_azimuth`\n\n* is optional\n\n* Type: merged type ([Sun azimuth angle. From the scene center point on the ground, this is the angle between truth north and the sun. Measured clockwise in degrees (0-360).](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md \"airs_model#/$defs/Properties/properties/view__sun_azimuth\")\n\n##### view\\_\\_sun\\_azimuth Type\n\nmerged type ([Sun azimuth angle. From the scene center point on the ground, this is the angle between truth north and the sun. Measured clockwise in degrees (0-360).](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-sun-azimuth-angle-from-the-scene-center-point-on-the-ground-this-is-the-angle-between-truth-north-and-the-sun-measured-clockwise-in-degrees-0-360-anyof-1.md \"check type definition\")\n\n#### view\\_\\_sun\\_elevation\n\n\n\n`view__sun_elevation`\n\n* is optional\n\n* Type: merged type ([Sun elevation angle. The angle from the tangent of the scene center point to the sun. Measured from the horizon in degrees (-90-90). Negative values indicate the sun is below the horizon, e.g. sun elevation of -10\u00b0 \\[...\\]](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md \"airs_model#/$defs/Properties/properties/view__sun_elevation\")\n\n##### view\\_\\_sun\\_elevation Type\n\nmerged type ([Sun elevation angle. The angle from the tangent of the scene center point to the sun. Measured from the horizon in degrees (-90-90). Negative values indicate the sun is below the horizon, e.g. sun elevation of -10\u00b0 \\[...\\]](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10-.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10--anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-sun-elevation-angle-the-angle-from-the-tangent-of-the-scene-center-point-to-the-sun-measured-from-the-horizon-in-degrees--90-90-negative-values-indicate-the-sun-is-below-the-horizon-eg-sun-elevation-of--10--anyof-1.md \"check type definition\")\n\n#### storage\\_\\_requester\\_pays\n\n\n\n`storage__requester_pays`\n\n* is optional\n\n* Type: merged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md \"airs_model#/$defs/Properties/properties/storage__requester_pays\")\n\n##### storage\\_\\_requester\\_pays Type\n\nmerged type ([Is the data requester pays or is it data manager/cloud provider pays. Defaults to false. Whether the requester pays for accessing assets](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-is-the-data-requester-pays-or-is-it-data-managercloud-provider-pays-defaults-to-false-whether-the-requester-pays-for-accessing-assets-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_tier\n\n\n\n`storage__tier`\n\n* is optional\n\n* Type: merged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md \"airs_model#/$defs/Properties/properties/storage__tier\")\n\n##### storage\\_\\_tier Type\n\nmerged type ([Cloud Provider Storage Tiers (Standard, Glacier, etc.)](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-cloud-provider-storage-tiers-standard-glacier-etc-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_platform\n\n\n\n`storage__platform`\n\n* is optional\n\n* Type: merged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md \"airs_model#/$defs/Properties/properties/storage__platform\")\n\n##### storage\\_\\_platform Type\n\nmerged type ([PaaS solutions (ALIBABA, AWS, AZURE, GCP, IBM, ORACLE, OTHER)](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-paas-solutions-alibaba-aws-azure-gcp-ibm-oracle-other-anyof-1.md \"check type definition\")\n\n#### storage\\_\\_region\n\n\n\n`storage__region`\n\n* is optional\n\n* Type: merged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md \"airs_model#/$defs/Properties/properties/storage__region\")\n\n##### storage\\_\\_region Type\n\nmerged type ([The region where the data is stored. Relevant to speed of access and inter region egress costs (as defined by PaaS provider)](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-region-where-the-data-is-stored-relevant-to-speed-of-access-and-inter-region-egress-costs-as-defined-by-paas-provider-anyof-1.md \"check type definition\")\n\n#### eo\\_\\_cloud\\_cover\n\n\n\n`eo__cloud_cover`\n\n* is optional\n\n* Type: merged type ([Estimate of cloud cover.](model-defs-properties-properties-estimate-of-cloud-cover.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-estimate-of-cloud-cover.md \"airs_model#/$defs/Properties/properties/eo__cloud_cover\")\n\n##### eo\\_\\_cloud\\_cover Type\n\nmerged type ([Estimate of cloud cover.](model-defs-properties-properties-estimate-of-cloud-cover.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-estimate-of-cloud-cover-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-estimate-of-cloud-cover-anyof-1.md \"check type definition\")\n\n#### eo\\_\\_snow\\_cover\n\n\n\n`eo__snow_cover`\n\n* is optional\n\n* Type: merged type ([Estimate of snow and ice cover.](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md \"airs_model#/$defs/Properties/properties/eo__snow_cover\")\n\n##### eo\\_\\_snow\\_cover Type\n\nmerged type ([Estimate of snow and ice cover.](model-defs-properties-properties-estimate-of-snow-and-ice-cover.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-estimate-of-snow-and-ice-cover-anyof-1.md \"check type definition\")\n\n#### eo\\_\\_bands\n\n\n\n`eo__bands`\n\n* is optional\n\n* Type: merged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md \"airs_model#/$defs/Properties/properties/eo__bands\")\n\n##### eo\\_\\_bands Type\n\nmerged type ([An array of available bands where each object is a Band Object. If given, requires at least one band.](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-an-array-of-available-bands-where-each-object-is-a-band-object-if-given-requires-at-least-one-band-anyof-1.md \"check type definition\")\n\n#### processing\\_\\_expression\n\n\n\n`processing__expression`\n\n* is optional\n\n* Type: merged type ([An expression or processing chain that describes how the data has been processed. Alternatively, you can also link to a processing chain with the relation type processing-expression (see below).](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md \"airs_model#/$defs/Properties/properties/processing__expression\")\n\n##### processing\\_\\_expression Type\n\nmerged type ([An expression or processing chain that describes how the data has been processed. Alternatively, you can also link to a processing chain with the relation type processing-expression (see below).](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-an-expression-or-processing-chain-that-describes-how-the-data-has-been-processed-alternatively-you-can-also-link-to-a-processing-chain-with-the-relation-type-processing-expression-see-below-anyof-1.md \"check type definition\")\n\n#### processing\\_\\_lineage\n\n\n\n`processing__lineage`\n\n* is optional\n\n* Type: merged type ([Lineage Information provided as free text information about the how observations were processed or models that were used to create the resource being described NASA ISO.](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md \"airs_model#/$defs/Properties/properties/processing__lineage\")\n\n##### processing\\_\\_lineage Type\n\nmerged type ([Lineage Information provided as free text information about the how observations were processed or models that were used to create the resource being described NASA ISO.](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-lineage-information-provided-as-free-text-information-about-the-how-observations-were-processed-or-models-that-were-used-to-create-the-resource-being-described-nasa-iso-anyof-1.md \"check type definition\")\n\n#### processing\\_\\_level\n\n\n\n`processing__level`\n\n* is optional\n\n* Type: merged type ([The name commonly used to refer to the processing level to make it easier to search for product level across collections or items. The short name must be used (only L, not Level).](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md \"airs_model#/$defs/Properties/properties/processing__level\")\n\n##### processing\\_\\_level Type\n\nmerged type ([The name commonly used to refer to the processing level to make it easier to search for product level across collections or items. The short name must be used (only L, not Level).](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-name-commonly-used-to-refer-to-the-processing-level-to-make-it-easier-to-search-for-product-level-across-collections-or-items-the-short-name-must-be-used-only-l-not-level-anyof-1.md \"check type definition\")\n\n#### processing\\_\\_facility\n\n\n\n`processing__facility`\n\n* is optional\n\n* Type: merged type ([The name of the facility that produced the data. For example, Copernicus S1 Core Ground Segment - DPA for product of Sentinel-1 satellites.](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md \"airs_model#/$defs/Properties/properties/processing__facility\")\n\n##### processing\\_\\_facility Type\n\nmerged type ([The name of the facility that produced the data. For example, Copernicus S1 Core Ground Segment - DPA for product of Sentinel-1 satellites.](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-facility-that-produced-the-data-for-example-copernicus-s1-core-ground-segment---dpa-for-product-of-sentinel-1-satellites-anyof-1.md \"check type definition\")\n\n#### processing\\_\\_software\n\n\n\n`processing__software`\n\n* is optional\n\n* Type: merged type ([A dictionary with name/version for key/value describing one or more softwares that produced the data.](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md \"airs_model#/$defs/Properties/properties/processing__software\")\n\n##### processing\\_\\_software Type\n\nmerged type ([A dictionary with name/version for key/value describing one or more softwares that produced the data.](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data.md))\n\nany of\n\n* [Untitled object in Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-a-dictionary-with-nameversion-for-keyvalue-describing-one-or-more-softwares-that-produced-the-data-anyof-1.md \"check type definition\")\n\n#### dc3\\_\\_quality\\_indicators\n\n\n\n`dc3__quality_indicators`\n\n* is optional\n\n* Type: merged type ([Set of indicators for estimating the quality of the datacube based on the composition. The indicators are group based. A cube indicator is the product of its corresponding group indicator.](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md \"airs_model#/$defs/Properties/properties/dc3__quality_indicators\")\n\n##### dc3\\_\\_quality\\_indicators Type\n\nmerged type ([Set of indicators for estimating the quality of the datacube based on the composition. The indicators are group based. A cube indicator is the product of its corresponding group indicator.](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator.md))\n\nany of\n\n* [Indicators](model-defs-indicators.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-set-of-indicators-for-estimating-the-quality-of-the-datacube-based-on-the-composition-the-indicators-are-group-based-a-cube-indicator-is-the-product-of-its-corresponding-group-indicator-anyof-1.md \"check type definition\")\n\n#### dc3\\_\\_composition\n\n\n\n`dc3__composition`\n\n* is optional\n\n* Type: merged type ([List of raster groups used for elaborating the cube temporal slices.](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md \"airs_model#/$defs/Properties/properties/dc3__composition\")\n\n##### dc3\\_\\_composition Type\n\nmerged type ([List of raster groups used for elaborating the cube temporal slices.](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-list-of-raster-groups-used-for-elaborating-the-cube-temporal-slices-anyof-1.md \"check type definition\")\n\n#### dc3\\_\\_number\\_of\\_chunks\n\n\n\n`dc3__number_of_chunks`\n\n* is optional\n\n* Type: merged type ([Number of chunks (if zarr or similar partitioned format) within the cube.](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md \"airs_model#/$defs/Properties/properties/dc3__number_of_chunks\")\n\n##### dc3\\_\\_number\\_of\\_chunks Type\n\nmerged type ([Number of chunks (if zarr or similar partitioned format) within the cube.](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-number-of-chunks-if-zarr-or-similar-partitioned-format-within-the-cube-anyof-1.md \"check type definition\")\n\n#### dc3\\_\\_chunk\\_weight\n\n\n\n`dc3__chunk_weight`\n\n* is optional\n\n* Type: merged type ([Weight of a chunk (number of bytes).](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md \"airs_model#/$defs/Properties/properties/dc3__chunk_weight\")\n\n##### dc3\\_\\_chunk\\_weight Type\n\nmerged type ([Weight of a chunk (number of bytes).](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-weight-of-a-chunk-number-of-bytes-anyof-1.md \"check type definition\")\n\n#### dc3\\_\\_fill\\_ratio\n\n\n\n`dc3__fill_ratio`\n\n* is optional\n\n* Type: merged type ([1: the cube is full, 0 the cube is empty, in between the cube is partially filled.](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md \"airs_model#/$defs/Properties/properties/dc3__fill_ratio\")\n\n##### dc3\\_\\_fill\\_ratio Type\n\nmerged type ([1: the cube is full, 0 the cube is empty, in between the cube is partially filled.](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-1-the-cube-is-full-0-the-cube-is-empty-in-between-the-cube-is-partially-filled-anyof-1.md \"check type definition\")\n\n#### cube\\_\\_dimensions\n\n\n\n`cube__dimensions`\n\n* is optional\n\n* Type: merged type ([Uniquely named dimensions of the datacube.](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md \"airs_model#/$defs/Properties/properties/cube__dimensions\")\n\n##### cube\\_\\_dimensions Type\n\nmerged type ([Uniquely named dimensions of the datacube.](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube.md))\n\nany of\n\n* [Untitled object in Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-uniquely-named-dimensions-of-the-datacube-anyof-1.md \"check type definition\")\n\n#### cube\\_\\_variables\n\n\n\n`cube__variables`\n\n* is optional\n\n* Type: merged type ([Uniquely named variables of the datacube.](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md \"airs_model#/$defs/Properties/properties/cube__variables\")\n\n##### cube\\_\\_variables Type\n\nmerged type ([Uniquely named variables of the datacube.](model-defs-properties-properties-uniquely-named-variables-of-the-datacube.md))\n\nany of\n\n* [Untitled object in Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-uniquely-named-variables-of-the-datacube-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_acquisition\\_mode\n\n\n\n`acq__acquisition_mode`\n\n* is optional\n\n* Type: merged type ([The name of the acquisition mode.](model-defs-properties-properties-the-name-of-the-acquisition-mode.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-name-of-the-acquisition-mode.md \"airs_model#/$defs/Properties/properties/acq__acquisition_mode\")\n\n##### acq\\_\\_acquisition\\_mode Type\n\nmerged type ([The name of the acquisition mode.](model-defs-properties-properties-the-name-of-the-acquisition-mode.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-acquisition-mode-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-acquisition-mode-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_acquisition\\_orbit\\_direction\n\n\n\n`acq__acquisition_orbit_direction`\n\n* is optional\n\n* Type: merged type ([Acquisition orbit direction (ASCENDING or DESCENDING).](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md \"airs_model#/$defs/Properties/properties/acq__acquisition_orbit_direction\")\n\n##### acq\\_\\_acquisition\\_orbit\\_direction Type\n\nmerged type ([Acquisition orbit direction (ASCENDING or DESCENDING).](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-acquisition-orbit-direction-ascending-or-descending-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_acquisition\\_type\n\n\n\n`acq__acquisition_type`\n\n* is optional\n\n* Type: merged type ([Acquisition type (STRIP)](model-defs-properties-properties-acquisition-type-strip.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-acquisition-type-strip.md \"airs_model#/$defs/Properties/properties/acq__acquisition_type\")\n\n##### acq\\_\\_acquisition\\_type Type\n\nmerged type ([Acquisition type (STRIP)](model-defs-properties-properties-acquisition-type-strip.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-acquisition-type-strip-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-acquisition-type-strip-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_acquisition\\_orbit\n\n\n\n`acq__acquisition_orbit`\n\n* is optional\n\n* Type: merged type ([Acquisition orbit](model-defs-properties-properties-acquisition-orbit.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-acquisition-orbit.md \"airs_model#/$defs/Properties/properties/acq__acquisition_orbit\")\n\n##### acq\\_\\_acquisition\\_orbit Type\n\nmerged type ([Acquisition orbit](model-defs-properties-properties-acquisition-orbit.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-acquisition-orbit-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-acquisition-orbit-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_across\\_track\n\n\n\n`acq__across_track`\n\n* is optional\n\n* Type: merged type ([Across track angle](model-defs-properties-properties-across-track-angle.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-across-track-angle.md \"airs_model#/$defs/Properties/properties/acq__across_track\")\n\n##### acq\\_\\_across\\_track Type\n\nmerged type ([Across track angle](model-defs-properties-properties-across-track-angle.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-across-track-angle-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-across-track-angle-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_along\\_track\n\n\n\n`acq__along_track`\n\n* is optional\n\n* Type: merged type ([Along track angle](model-defs-properties-properties-along-track-angle.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-along-track-angle.md \"airs_model#/$defs/Properties/properties/acq__along_track\")\n\n##### acq\\_\\_along\\_track Type\n\nmerged type ([Along track angle](model-defs-properties-properties-along-track-angle.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-along-track-angle-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-along-track-angle-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_archiving\\_date\n\n\n\n`acq__archiving_date`\n\n* is optional\n\n* Type: merged type ([Archiving date](model-defs-properties-properties-archiving-date.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-archiving-date.md \"airs_model#/$defs/Properties/properties/acq__archiving_date\")\n\n##### acq\\_\\_archiving\\_date Type\n\nmerged type ([Archiving date](model-defs-properties-properties-archiving-date.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-archiving-date-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-archiving-date-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_download\\_orbit\n\n\n\n`acq__download_orbit`\n\n* is optional\n\n* Type: merged type ([Download orbit](model-defs-properties-properties-download-orbit.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-download-orbit.md \"airs_model#/$defs/Properties/properties/acq__download_orbit\")\n\n##### acq\\_\\_download\\_orbit Type\n\nmerged type ([Download orbit](model-defs-properties-properties-download-orbit.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-download-orbit-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-download-orbit-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_request\\_id\n\n\n\n`acq__request_id`\n\n* is optional\n\n* Type: merged type ([Original request identifier](model-defs-properties-properties-original-request-identifier.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-original-request-identifier.md \"airs_model#/$defs/Properties/properties/acq__request_id\")\n\n##### acq\\_\\_request\\_id Type\n\nmerged type ([Original request identifier](model-defs-properties-properties-original-request-identifier.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-original-request-identifier-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-original-request-identifier-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_quality\\_average\n\n\n\n`acq__quality_average`\n\n* is optional\n\n* Type: merged type ([Quality average](model-defs-properties-properties-quality-average.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-quality-average.md \"airs_model#/$defs/Properties/properties/acq__quality_average\")\n\n##### acq\\_\\_quality\\_average Type\n\nmerged type ([Quality average](model-defs-properties-properties-quality-average.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-quality-average-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-quality-average-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_quality\\_computation\n\n\n\n`acq__quality_computation`\n\n* is optional\n\n* Type: merged type ([Quality computation](model-defs-properties-properties-quality-computation.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-quality-computation.md \"airs_model#/$defs/Properties/properties/acq__quality_computation\")\n\n##### acq\\_\\_quality\\_computation Type\n\nmerged type ([Quality computation](model-defs-properties-properties-quality-computation.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-quality-computation-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-quality-computation-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_receiving\\_station\n\n\n\n`acq__receiving_station`\n\n* is optional\n\n* Type: merged type ([Receiving station](model-defs-properties-properties-receiving-station.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-receiving-station.md \"airs_model#/$defs/Properties/properties/acq__receiving_station\")\n\n##### acq\\_\\_receiving\\_station Type\n\nmerged type ([Receiving station](model-defs-properties-properties-receiving-station.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-receiving-station-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-receiving-station-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_reception\\_date\n\n\n\n`acq__reception_date`\n\n* is optional\n\n* Type: merged type ([Reception date](model-defs-properties-properties-reception-date.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-reception-date.md \"airs_model#/$defs/Properties/properties/acq__reception_date\")\n\n##### acq\\_\\_reception\\_date Type\n\nmerged type ([Reception date](model-defs-properties-properties-reception-date.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-reception-date-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-reception-date-anyof-1.md \"check type definition\")\n\n#### acq\\_\\_spectral\\_mode\n\n\n\n`acq__spectral_mode`\n\n* is optional\n\n* Type: merged type ([Spectral mode](model-defs-properties-properties-spectral-mode.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-spectral-mode.md \"airs_model#/$defs/Properties/properties/acq__spectral_mode\")\n\n##### acq\\_\\_spectral\\_mode Type\n\nmerged type ([Spectral mode](model-defs-properties-properties-spectral-mode.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-spectral-mode-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-spectral-mode-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_instrument\\_mode\n\n\n\n`sar__instrument_mode`\n\n* is optional\n\n* Type: merged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for \"Wave mode\" of Sentinel-1 and Envisat ASAR satellites.](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md \"airs_model#/$defs/Properties/properties/sar__instrument_mode\")\n\n##### sar\\_\\_instrument\\_mode Type\n\nmerged type ([The name of the sensor acquisition mode that is commonly used. This should be the short name, if available. For example, WV for \"Wave mode\" of Sentinel-1 and Envisat ASAR satellites.](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-name-of-the-sensor-acquisition-mode-that-is-commonly-used-this-should-be-the-short-name-if-available-for-example-wv-for-wave-mode-of-sentinel-1-and-envisat-asar-satellites-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_frequency\\_band\n\n\n\n`sar__frequency_band`\n\n* is optional\n\n* Type: merged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section \"Common Frequency Band Names\" for a list of accepted names.](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md \"airs_model#/$defs/Properties/properties/sar__frequency_band\")\n\n##### sar\\_\\_frequency\\_band Type\n\nmerged type ([The common name for the frequency band to make it easier to search for bands across instruments. See section \"Common Frequency Band Names\" for a list of accepted names.](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-common-name-for-the-frequency-band-to-make-it-easier-to-search-for-bands-across-instruments-see-section-common-frequency-band-names-for-a-list-of-accepted-names-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_center\\_frequency\n\n\n\n`sar__center_frequency`\n\n* is optional\n\n* Type: merged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md \"airs_model#/$defs/Properties/properties/sar__center_frequency\")\n\n##### sar\\_\\_center\\_frequency Type\n\nmerged type ([The center frequency of the instrument, in gigahertz (GHz).](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-center-frequency-of-the-instrument-in-gigahertz-ghz-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_polarizations\n\n\n\n`sar__polarizations`\n\n* is optional\n\n* Type: merged type ([Any combination of polarizations.](model-defs-properties-properties-any-combination-of-polarizations.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-any-combination-of-polarizations.md \"airs_model#/$defs/Properties/properties/sar__polarizations\")\n\n##### sar\\_\\_polarizations Type\n\nmerged type ([Any combination of polarizations.](model-defs-properties-properties-any-combination-of-polarizations.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-any-combination-of-polarizations-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-any-combination-of-polarizations-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_product\\_type\n\n\n\n`sar__product_type`\n\n* is optional\n\n* Type: merged type ([The product type, for example SSC, MGD, or SGC](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md \"airs_model#/$defs/Properties/properties/sar__product_type\")\n\n##### sar\\_\\_product\\_type Type\n\nmerged type ([The product type, for example SSC, MGD, or SGC](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-product-type-for-example-ssc-mgd-or-sgc-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_resolution\\_range\n\n\n\n`sar__resolution_range`\n\n* is optional\n\n* Type: merged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Properties/properties/sar__resolution_range\")\n\n##### sar\\_\\_resolution\\_range Type\n\nmerged type ([The range resolution, which is the maximum ability to distinguish two adjacent targets perpendicular to the flight path, in meters (m).](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-range-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-perpendicular-to-the-flight-path-in-meters-m-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_resolution\\_azimuth\n\n\n\n`sar__resolution_azimuth`\n\n* is optional\n\n* Type: merged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md \"airs_model#/$defs/Properties/properties/sar__resolution_azimuth\")\n\n##### sar\\_\\_resolution\\_azimuth Type\n\nmerged type ([The azimuth resolution, which is the maximum ability to distinguish two adjacent targets parallel to the flight path, in meters (m).](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-azimuth-resolution-which-is-the-maximum-ability-to-distinguish-two-adjacent-targets-parallel-to-the-flight-path-in-meters-m-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_pixel\\_spacing\\_range\n\n\n\n`sar__pixel_spacing_range`\n\n* is optional\n\n* Type: merged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Properties/properties/sar__pixel_spacing_range\")\n\n##### sar\\_\\_pixel\\_spacing\\_range Type\n\nmerged type ([The range pixel spacing, which is the distance between adjacent pixels perpendicular to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-range-pixel-spacing-which-is-the-distance-between-adjacent-pixels-perpendicular-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_pixel\\_spacing\\_azimuth\n\n\n\n`sar__pixel_spacing_azimuth`\n\n* is optional\n\n* Type: merged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md \"airs_model#/$defs/Properties/properties/sar__pixel_spacing_azimuth\")\n\n##### sar\\_\\_pixel\\_spacing\\_azimuth Type\n\nmerged type ([The azimuth pixel spacing, which is the distance between adjacent pixels parallel to the flight path, in meters (m). Strongly RECOMMENDED to be specified for products of type GRD.](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-azimuth-pixel-spacing-which-is-the-distance-between-adjacent-pixels-parallel-to-the-flight-path-in-meters-m-strongly-recommended-to-be-specified-for-products-of-type-grd-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_range\n\n\n\n`sar__looks_range`\n\n* is optional\n\n* Type: merged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md \"airs_model#/$defs/Properties/properties/sar__looks_range\")\n\n##### sar\\_\\_looks\\_range Type\n\nmerged type ([Number of range looks, which is the number of groups of signal samples (looks) perpendicular to the flight path.](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-number-of-range-looks-which-is-the-number-of-groups-of-signal-samples-looks-perpendicular-to-the-flight-path-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_azimuth\n\n\n\n`sar__looks_azimuth`\n\n* is optional\n\n* Type: merged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md \"airs_model#/$defs/Properties/properties/sar__looks_azimuth\")\n\n##### sar\\_\\_looks\\_azimuth Type\n\nmerged type ([Number of azimuth looks, which is the number of groups of signal samples (looks) parallel to the flight path.](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-number-of-azimuth-looks-which-is-the-number-of-groups-of-signal-samples-looks-parallel-to-the-flight-path-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_looks\\_equivalent\\_number\n\n\n\n`sar__looks_equivalent_number`\n\n* is optional\n\n* Type: merged type ([The equivalent number of looks (ENL).](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md \"airs_model#/$defs/Properties/properties/sar__looks_equivalent_number\")\n\n##### sar\\_\\_looks\\_equivalent\\_number Type\n\nmerged type ([The equivalent number of looks (ENL).](model-defs-properties-properties-the-equivalent-number-of-looks-enl.md))\n\nany of\n\n* [Untitled number in Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-equivalent-number-of-looks-enl-anyof-1.md \"check type definition\")\n\n#### sar\\_\\_observation\\_direction\n\n\n\n`sar__observation_direction`\n\n* is optional\n\n* Type: merged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md \"airs_model#/$defs/Properties/properties/sar__observation_direction\")\n\n##### sar\\_\\_observation\\_direction Type\n\nmerged type ([Antenna pointing direction relative to the flight trajectory of the satellite, either left or right.](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-antenna-pointing-direction-relative-to-the-flight-trajectory-of-the-satellite-either-left-or-right-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_epsg\n\n\n\n`proj__epsg`\n\n* is optional\n\n* Type: merged type ([EPSG code of the datasource.](model-defs-properties-properties-epsg-code-of-the-datasource.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-epsg-code-of-the-datasource.md \"airs_model#/$defs/Properties/properties/proj__epsg\")\n\n##### proj\\_\\_epsg Type\n\nmerged type ([EPSG code of the datasource.](model-defs-properties-properties-epsg-code-of-the-datasource.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-epsg-code-of-the-datasource-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-epsg-code-of-the-datasource-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_wkt2\n\n\n\n`proj__wkt2`\n\n* is optional\n\n* Type: merged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md \"airs_model#/$defs/Properties/properties/proj__wkt2\")\n\n##### proj\\_\\_wkt2 Type\n\nmerged type ([PROJJSON object representing the Coordinate Reference System (CRS) that the proj:geometry and proj:bbox fields represent.](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-projjson-object-representing-the-coordinate-reference-system-crs-that-the-projgeometry-and-projbbox-fields-represent-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_geometry\n\n\n\n`proj__geometry`\n\n* is optional\n\n* Type: merged type ([Defines the footprint of this Item.](model-defs-properties-properties-defines-the-footprint-of-this-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-defines-the-footprint-of-this-item.md \"airs_model#/$defs/Properties/properties/proj__geometry\")\n\n##### proj\\_\\_geometry Type\n\nmerged type ([Defines the footprint of this Item.](model-defs-properties-properties-defines-the-footprint-of-this-item.md))\n\nany of\n\n* [Untitled undefined type in Item](model-defs-properties-properties-defines-the-footprint-of-this-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-defines-the-footprint-of-this-item-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_bbox\n\n\n\n`proj__bbox`\n\n* is optional\n\n* Type: merged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md \"airs_model#/$defs/Properties/properties/proj__bbox\")\n\n##### proj\\_\\_bbox Type\n\nmerged type ([Bounding box of the Item in the asset CRS in 2 or 3 dimensions.](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-bounding-box-of-the-item-in-the-asset-crs-in-2-or-3-dimensions-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_centroid\n\n\n\n`proj__centroid`\n\n* is optional\n\n* Type: merged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md \"airs_model#/$defs/Properties/properties/proj__centroid\")\n\n##### proj\\_\\_centroid Type\n\nmerged type ([Coordinates representing the centroid of the Item (in lat/long).](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong.md))\n\nany of\n\n* [Untitled undefined type in Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-coordinates-representing-the-centroid-of-the-item-in-latlong-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_shape\n\n\n\n`proj__shape`\n\n* is optional\n\n* Type: merged type ([Number of pixels in Y and X directions for the default grid.](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md \"airs_model#/$defs/Properties/properties/proj__shape\")\n\n##### proj\\_\\_shape Type\n\nmerged type ([Number of pixels in Y and X directions for the default grid.](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-number-of-pixels-in-y-and-x-directions-for-the-default-grid-anyof-1.md \"check type definition\")\n\n#### proj\\_\\_transform\n\n\n\n`proj__transform`\n\n* is optional\n\n* Type: merged type ([The affine transformation coefficients for the default grid.](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md \"airs_model#/$defs/Properties/properties/proj__transform\")\n\n##### proj\\_\\_transform Type\n\nmerged type ([The affine transformation coefficients for the default grid.](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-affine-transformation-coefficients-for-the-default-grid-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_overview\n\n\n\n`generated__has_overview`\n\n* is optional\n\n* Type: merged type ([Whether the item has an overview or not.](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_overview\")\n\n##### generated\\_\\_has\\_overview Type\n\nmerged type ([Whether the item has an overview or not.](model-defs-properties-properties-whether-the-item-has-an-overview-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-an-overview-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_thumbnail\n\n\n\n`generated__has_thumbnail`\n\n* is optional\n\n* Type: merged type ([Whether the item has a thumbnail or not.](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_thumbnail\")\n\n##### generated\\_\\_has\\_thumbnail Type\n\nmerged type ([Whether the item has a thumbnail or not.](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-thumbnail-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_metadata\n\n\n\n`generated__has_metadata`\n\n* is optional\n\n* Type: merged type ([Whether the item has a metadata file or not.](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_metadata\")\n\n##### generated\\_\\_has\\_metadata Type\n\nmerged type ([Whether the item has a metadata file or not.](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-metadata-file-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_data\n\n\n\n`generated__has_data`\n\n* is optional\n\n* Type: merged type ([Whether the item has a data file or not.](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_data\")\n\n##### generated\\_\\_has\\_data Type\n\nmerged type ([Whether the item has a data file or not.](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-data-file-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_cog\n\n\n\n`generated__has_cog`\n\n* is optional\n\n* Type: merged type ([Whether the item has a cog or not.](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_cog\")\n\n##### generated\\_\\_has\\_cog Type\n\nmerged type ([Whether the item has a cog or not.](model-defs-properties-properties-whether-the-item-has-a-cog-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-cog-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_has\\_zarr\n\n\n\n`generated__has_zarr`\n\n* is optional\n\n* Type: merged type ([Whether the item has a zarr or not.](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md \"airs_model#/$defs/Properties/properties/generated__has_zarr\")\n\n##### generated\\_\\_has\\_zarr Type\n\nmerged type ([Whether the item has a zarr or not.](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not.md))\n\nany of\n\n* [Untitled boolean in Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-whether-the-item-has-a-zarr-or-not-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_date\\_keywords\n\n\n\n`generated__date_keywords`\n\n* is optional\n\n* Type: merged type ([A list of keywords indicating clues on the date](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md \"airs_model#/$defs/Properties/properties/generated__date_keywords\")\n\n##### generated\\_\\_date\\_keywords Type\n\nmerged type ([A list of keywords indicating clues on the date](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-a-list-of-keywords-indicating-clues-on-the-date-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_day\\_of\\_week\n\n\n\n`generated__day_of_week`\n\n* is optional\n\n* Type: merged type ([Day of week.](model-defs-properties-properties-day-of-week.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-day-of-week.md \"airs_model#/$defs/Properties/properties/generated__day_of_week\")\n\n##### generated\\_\\_day\\_of\\_week Type\n\nmerged type ([Day of week.](model-defs-properties-properties-day-of-week.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-day-of-week-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-day-of-week-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_day\\_of\\_year\n\n\n\n`generated__day_of_year`\n\n* is optional\n\n* Type: merged type ([Day of year.](model-defs-properties-properties-day-of-year.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-day-of-year.md \"airs_model#/$defs/Properties/properties/generated__day_of_year\")\n\n##### generated\\_\\_day\\_of\\_year Type\n\nmerged type ([Day of year.](model-defs-properties-properties-day-of-year.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-day-of-year-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-day-of-year-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_hour\\_of\\_day\n\n\n\n`generated__hour_of_day`\n\n* is optional\n\n* Type: merged type ([Hour of day.](model-defs-properties-properties-hour-of-day.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-hour-of-day.md \"airs_model#/$defs/Properties/properties/generated__hour_of_day\")\n\n##### generated\\_\\_hour\\_of\\_day Type\n\nmerged type ([Hour of day.](model-defs-properties-properties-hour-of-day.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-hour-of-day-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-hour-of-day-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_minute\\_of\\_day\n\n\n\n`generated__minute_of_day`\n\n* is optional\n\n* Type: merged type ([Minute of day.](model-defs-properties-properties-minute-of-day.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-minute-of-day.md \"airs_model#/$defs/Properties/properties/generated__minute_of_day\")\n\n##### generated\\_\\_minute\\_of\\_day Type\n\nmerged type ([Minute of day.](model-defs-properties-properties-minute-of-day.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-minute-of-day-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-minute-of-day-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_month\n\n\n\n`generated__month`\n\n* is optional\n\n* Type: merged type ([Month](model-defs-properties-properties-month.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-month.md \"airs_model#/$defs/Properties/properties/generated__month\")\n\n##### generated\\_\\_month Type\n\nmerged type ([Month](model-defs-properties-properties-month.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-month-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-month-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_year\n\n\n\n`generated__year`\n\n* is optional\n\n* Type: merged type ([Year](model-defs-properties-properties-year.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-year.md \"airs_model#/$defs/Properties/properties/generated__year\")\n\n##### generated\\_\\_year Type\n\nmerged type ([Year](model-defs-properties-properties-year.md))\n\nany of\n\n* [Untitled integer in Item](model-defs-properties-properties-year-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-year-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_season\n\n\n\n`generated__season`\n\n* is optional\n\n* Type: merged type ([Season](model-defs-properties-properties-season.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-season.md \"airs_model#/$defs/Properties/properties/generated__season\")\n\n##### generated\\_\\_season Type\n\nmerged type ([Season](model-defs-properties-properties-season.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-season-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-season-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_tltrbrbl\n\n\n\n`generated__tltrbrbl`\n\n* is optional\n\n* Type: merged type ([The coordinates of the top left, top right, bottom right, bottom left corners of the item.](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md \"airs_model#/$defs/Properties/properties/generated__tltrbrbl\")\n\n##### generated\\_\\_tltrbrbl Type\n\nmerged type ([The coordinates of the top left, top right, bottom right, bottom left corners of the item.](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-the-coordinates-of-the-top-left-top-right-bottom-right-bottom-left-corners-of-the-item-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_band\\_common\\_names\n\n\n\n`generated__band_common_names`\n\n* is optional\n\n* Type: merged type ([List of the band common names.](model-defs-properties-properties-list-of-the-band-common-names.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-list-of-the-band-common-names.md \"airs_model#/$defs/Properties/properties/generated__band_common_names\")\n\n##### generated\\_\\_band\\_common\\_names Type\n\nmerged type ([List of the band common names.](model-defs-properties-properties-list-of-the-band-common-names.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-list-of-the-band-common-names-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-list-of-the-band-common-names-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_band\\_names\n\n\n\n`generated__band_names`\n\n* is optional\n\n* Type: merged type ([List of the band names.](model-defs-properties-properties-list-of-the-band-names.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-list-of-the-band-names.md \"airs_model#/$defs/Properties/properties/generated__band_names\")\n\n##### generated\\_\\_band\\_names Type\n\nmerged type ([List of the band names.](model-defs-properties-properties-list-of-the-band-names.md))\n\nany of\n\n* [Untitled array in Item](model-defs-properties-properties-list-of-the-band-names-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-list-of-the-band-names-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_geohash2\n\n\n\n`generated__geohash2`\n\n* is optional\n\n* Type: merged type ([Geohash on the first two characters.](model-defs-properties-properties-geohash-on-the-first-two-characters.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-two-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash2\")\n\n##### generated\\_\\_geohash2 Type\n\nmerged type ([Geohash on the first two characters.](model-defs-properties-properties-geohash-on-the-first-two-characters.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-two-characters-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-two-characters-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_geohash3\n\n\n\n`generated__geohash3`\n\n* is optional\n\n* Type: merged type ([Geohash on the first three characters.](model-defs-properties-properties-geohash-on-the-first-three-characters.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-three-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash3\")\n\n##### generated\\_\\_geohash3 Type\n\nmerged type ([Geohash on the first three characters.](model-defs-properties-properties-geohash-on-the-first-three-characters.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-three-characters-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-three-characters-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_geohash4\n\n\n\n`generated__geohash4`\n\n* is optional\n\n* Type: merged type ([Geohash on the first four characters.](model-defs-properties-properties-geohash-on-the-first-four-characters.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-four-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash4\")\n\n##### generated\\_\\_geohash4 Type\n\nmerged type ([Geohash on the first four characters.](model-defs-properties-properties-geohash-on-the-first-four-characters.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-four-characters-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-four-characters-anyof-1.md \"check type definition\")\n\n#### generated\\_\\_geohash5\n\n\n\n`generated__geohash5`\n\n* is optional\n\n* Type: merged type ([Geohash on the first five characters.](model-defs-properties-properties-geohash-on-the-first-five-characters.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-properties-properties-geohash-on-the-first-five-characters.md \"airs_model#/$defs/Properties/properties/generated__geohash5\")\n\n##### generated\\_\\_geohash5 Type\n\nmerged type ([Geohash on the first five characters.](model-defs-properties-properties-geohash-on-the-first-five-characters.md))\n\nany of\n\n* [Untitled string in Item](model-defs-properties-properties-geohash-on-the-first-five-characters-anyof-0.md \"check type definition\")\n\n* [Untitled null in Item](model-defs-properties-properties-geohash-on-the-first-five-characters-anyof-1.md \"check type definition\")\n\n#### Additional Properties\n\nAdditional properties are allowed and do not have to follow a specific schema\n\n### Definitions group Raster\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/Raster\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :-------------- | :------- | :------- | :------------- | :-------------------------------------------------------------------------------------- |\n| [type](#type-1) | `object` | Required | cannot be null | [Item](model-defs-rastertype.md \"airs_model#/$defs/Raster/properties/type\") |\n| [path](#path) | `string` | Required | cannot be null | [Item](model-defs-raster-properties-path.md \"airs_model#/$defs/Raster/properties/path\") |\n| [id](#id-1) | `string` | Required | cannot be null | [Item](model-defs-raster-properties-id.md \"airs_model#/$defs/Raster/properties/id\") |\n\n#### type\n\n\n\n`type`\n\n* is required\n\n* Type: `object` ([RasterType](model-defs-rastertype.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-rastertype.md \"airs_model#/$defs/Raster/properties/type\")\n\n##### type Type\n\n`object` ([RasterType](model-defs-rastertype.md))\n\n#### path\n\n\n\n`path`\n\n* is required\n\n* Type: `string` ([Path](model-defs-raster-properties-path.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-raster-properties-path.md \"airs_model#/$defs/Raster/properties/path\")\n\n##### path Type\n\n`string` ([Path](model-defs-raster-properties-path.md))\n\n#### id\n\n\n\n`id`\n\n* is required\n\n* Type: `string` ([Id](model-defs-raster-properties-id.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-raster-properties-id.md \"airs_model#/$defs/Raster/properties/id\")\n\n##### id Type\n\n`string` ([Id](model-defs-raster-properties-id.md))\n\n### Definitions group RasterType\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/RasterType\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :---------------- | :------- | :------- | :------------- | :-------------------------------------------------------------------------------------------------- |\n| [source](#source) | `string` | Required | cannot be null | [Item](model-defs-rastertype-properties-source.md \"airs_model#/$defs/RasterType/properties/source\") |\n| [format](#format) | `string` | Required | cannot be null | [Item](model-defs-rastertype-properties-format.md \"airs_model#/$defs/RasterType/properties/format\") |\n\n#### source\n\n\n\n`source`\n\n* is required\n\n* Type: `string` ([Source](model-defs-rastertype-properties-source.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-rastertype-properties-source.md \"airs_model#/$defs/RasterType/properties/source\")\n\n##### source Type\n\n`string` ([Source](model-defs-rastertype-properties-source.md))\n\n#### format\n\n\n\n`format`\n\n* is required\n\n* Type: `string` ([Format](model-defs-rastertype-properties-format.md))\n\n* cannot be null\n\n* defined in: [Item](model-defs-rastertype-properties-format.md \"airs_model#/$defs/RasterType/properties/format\")\n\n##### format Type\n\n`string` ([Format](model-defs-rastertype-properties-format.md))\n\n### Definitions group VariableType\n\nReference this group by using\n\n```json\n{\"$ref\":\"airs_model#/$defs/VariableType\"}\n```\n\n| Property | Type | Required | Nullable | Defined by |\n| :------- | :--- | :------- | :------- | :--------- |\n\n\n",
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