Our goal with the San Francisco Bay Area campaign was to collect and process radar data using Capella’s radar engineering model hardware. Processing was done such that the data simulates what Capella expects from our first generation satellites.
The radar was installed on a Cessna 182 aircraft with a horn antenna in place of the deployable space-borne antenna. Acquisitions were done at an altitude of 2000 meters above ground level. The antenna bore-sight angle was set to 40 degrees to mimic collections at this look angle. The swath width imaged was around 2 km and each collection was a 3 km long acquisition.
Acquisitions were made over scenes with a diverse set of features, including ships, aircraft, bridges, roads, buildings (both industrial and residential), agricultural fields, and in areas with diverse topography.
The radar data was processed using a GPU-based back-projection algorithm developed at Capella. Single-look complex data was multi-looked to produce an image with a resolution of 0.5 m by 0.5 m. The noise level in the images is representative of the NESZ for the spotlight product from our future constellation. We expect to produce images with improved radiometric resolution with our satellite constellation, compared to the SF Bay Area aerial collects, due to the higher number of looks.
For information on the applicable license for this data, please see our Data Licensing page.
|Single Look Complex (SLC)||Geocoded and Multilooked (GEO)|
|Data Content||Amplitude and Phase||Amplitude Only|
|Projection||Ground projected||Ground projected|
|Resolution||0.3m slant range, 0.5m azimuth||0.5m ground range, 0.5m azimuth|
|Number of Looks||1||5|
|File Format||Cloud Optimized Geotiff||Cloud Optimized Geotiff|