SatVu Catalog Structure
The SatVu Catalog provides a STAC-compliant interface for discovering and accessing SatVu imagery. It is built around standard STAC concepts such as catalogs, collections, items, and item relationships, enabling consistent search and integration with STAC-compatible tools and workflows.
This page introduces the available imagery products and explains how they are structured and related within the SatVu Catalog.
Imagery products
SatVu produces imagery under the following Imagery Products:
| Imagery Product | Description |
|---|---|
| Primary | Minimally processed imagery that is radiometrically corrected while preserving the original image geometry. Optimised to provide maximum flexibility for users to apply their own corrections and calibrations. |
| Surface Brightness Temperature (SBT) | Orthorectified imagery that has been both geometrically and radiometrically corrected, optimised for immediate visual interpretation. |
More information on the Imagery products and processing levels can be found in the Imagery User Guide within the SatVu Specifications.
Catalog Structure
Each imagery product is represented in the catalog as a STAC Item. These product Items are grouped into product-specific Collections, allowing them to be searched and accessed independently.
Each imagery product STAC Item is connected through a parent acquisition STAC Item. The acquisition STAC Item
corresponds to a single satellite imaging event, and acts as the parent Item for all imagery products derived from that
event.
Acquisition Items are grouped within the acquisition collection, which is the main collection used to search and order
imagery from the SatVu catalog
The parent acquisition Item for each Product Item (such as SBT) can be identified in the STAC metadata via the
derived_from relationship in the links field.
Item IDs
Each STAC Item has a specific ID used to identify the Item. These follow a format which connects the imagery Items to
the corresponding parent Item within the acquisitions collection.
| Collection | Format | Example |
|---|---|---|
| Acquisition | yyyymmdd_mmss_platformID | 20260125_140500_HS1 |
| Primary | yyyymmdd_mmss_platformID_PRM | 20260125_140500_HS1_PRM |
| SBT | yyyymmdd_mmss_platformID_SBT | 20260125_140500_HS1_SBT |
Ordering and accessing data
When purchasing data in the SatVu Platform, you will purchase the Acquisition STAC Item. This automatically provides access to all downstream imagery products derived from that Acquisition.
When ordering Items from the catalog through the API, please provide the Item ID of the acquisition Item - not the
Product specific Item IDs.
For more information on ordering through the Catalog API, see Catalog API tutorial
Product availability
Not all imagery products may be available for every acquisition. Where a product cannot be produced, access will be provided to the available products for that acquisition.
If you have questions about product availability for a specific acquisition, please contact your SatVu support representative.