Archive Catalog Image Footprint File Download
Overview
In addition to searching for individual Capella SAR data collects, you can also use the catalog service to search for and download geospatial files of the image footprints in the Capella public archive. This data is provided in bulk for the entire Capella archive for exploration and analysis in third-party geospatial tools and applications.
Search for Archive Catalog Image Footprint Files
The archive catalog image footprint files available for download are available through the following request:
GET https://api.capellaspace.com/catalog/archive-export/available
which returns a response similar to the following:
{"latest": ["capella_archive_export_latest.geoparquet","capella_archive_export_latest.gpkg","capella_archive_export_latest.shp.zip"],"weekly": ["2020/43/capella_archive_export_20201019_20201026.geoparquet","2020/43/capella_archive_export_20201019_20201026.gpkg","2020/43/capella_archive_export_20201019_20201026.shp.zip","2020/44/capella_archive_export_20201026_20201102.geoparquet","2020/44/capella_archive_export_20201026_20201102.gpkg","2020/44/capella_archive_export_20201026_20201102.shp.zip","2020/45/capella_archive_export_20201102_20201109.geoparquet","2020/45/capella_archive_export_20201102_20201109.gpkg","2020/45/capella_archive_export_20201102_20201109.shp.zip",...... truncated for brevity..."2023/35/capella_archive_export_20230828_20230904.geoparquet","2023/35/capella_archive_export_20230828_20230904.gpkg","2023/35/capella_archive_export_20230828_20230904.shp.zip","2023/36/capella_archive_export_20230904_20230911.geoparquet","2023/36/capella_archive_export_20230904_20230911.gpkg","2023/36/capella_archive_export_20230904_20230911.shp.zip","2023/37/capella_archive_export_20230911_20230918.geoparquet","2023/37/capella_archive_export_20230911_20230918.gpkg","2023/37/capella_archive_export_20230911_20230918.shp.zip"],"full": ["capella_archive_export_full.geoparquet","capella_archive_export_full.gpkg","capella_archive_export_full.shp.zip"]}
All archive catalog image footrpint files available for download are organized into three timescale groupings:
latest
- All collects captured in latest 7-day rolling period
- Updated daily at 10:00 UTC
weekly
- All collects broken out by week of capture (Monday – Sunday) and listed chronologically
- Latest 4 weeks are updated daily at 10:00 UTC (to account for new data that may enter the public archive from archive holdback)
full
- All collects in the public archive
- Updated weekly, Mondays at 10:00 UTC
And are provided in the following industry standard geospatial data formats:
- GeoParquet
- Apache Parquet is a powerful column-oriented data format, built from the ground up as a modern alternative to CSV files. GeoParquet is an incubating Open Geospatial Consortium (OGC) standard that adds interoperable geospatial types (Point, Line, Polygon)
- GeoPackage
- An open, standards-based, platform-independent, portable, self-describing, compact format for transferring geospatial information
- Shapefile (in a compressed zip file)
- Esri vector data storage format for storing the location, shape, and attributes of geographic features
Download Archive Catalog Image Footprint Files
The archive catalog image footrpint files can be downloaded through a POST
request with a properly formed message body to:
POST https://api.capellaspace.com/catalog/archive-export/presigned
The message body can include three parameters:
exportType
- Values:
latest
weekly
full
- Required
- Values:
exportFormat
- Values:
geoparquet
gpkg
shp.zip
- Optional
- Not to be included if
fileNames
is specified - Must be included if
fileNames
is NOT specified
- Not to be included if
- Values:
fileNames
- List of specific file name(s) to download
- Optional
- Not to be included if
exportFormat
is specified - Must be included if
exportFormat
is NOT specified
- Not to be included if
Message body examples
Signed URL for latest data file in GeoPackage format:
POST https://api.capellaspace.com/catalog/archive-export/presigned{"exportType": "latest","exportFormat": "gpkg"}Signed URLs for all weekly files in GeoParquet format:
POST https://api.capellaspace.com/catalog/archive-export/presigned{"exportType": "weekly","exportFormat": "geoparquet"}Signed URL for full data file in Shapefile format:
POST https://api.capellaspace.com/catalog/archive-export/presigned{"exportType": "full","exportFormat": "shp.zip"}
Signed URL for a specific weekly file in GeoPackage format:
POST https://api.capellaspace.com/catalog/archive-export/presigned{"exportType": "weekly","fileNames": ["2023/37/capella_archive_export_20230911_20230918.gpkg"]}
Response example (truncated)
[{"exportType": "weekly","exportFile": "2023/37/capella_archive_export_20230911_20230918.gpkg","downloadHref": "https://capella-archive-export-prod.s3.amazonaws.com/weekly/2023/37/capella_archive_export_20230911_20230918.gpkg?AWSAccessKeyId..."}]
Response properties
exportType
- The type of export, which describes the export timescale grouping
- Values
latest
weekly
full
exportFile
- The name of the file to be downloaded
downloadHref
- The signed URL to download the file
- The URL is valid for 1 hour after generation
File content
All archive catalog image footprint files contain the following information for each collect included in the export:
- Collect footprint geometry
- Collect metadata
id
- Capella unique Collect ID
datetime
- Datetime the collect was acquired
mode
- Imaging mode of the collect
product types
- List of image formats available for the collect
url
- Link to view the collect in the Capella Console UI
SLC
- STAC ID (unique name) of the SLC format for the collect (if available)
GEO
- STAC ID (unique name) of the GEO format for the collect (if available)
GEC
- STAC ID (unique name) of the GEC format for the collect (if available)
SICD
- STAC ID (unique name) of the SICD format for the collect (if available)
SIDD
- STAC ID (unique name) of the SIDD format for the collect (if available)
CPHD
- STAC ID (unique name) of the CPHD format for the collect (if available)
Additional Information
For more information on searching for and downloading archive imagery footprint files, see the API reference for the Catalog Service.