Sentinel-1 Radiometrically Terrain Corrected
The Sentinel-1 mission is a constellation of two polar-orbiting satellites, operating day and night performing C-band synthetic aperture radar imaging. The Sentinel-1 Radiometrically Terrain Corrected (RTC) data in this collection is a radiometrically terrain corrected product derived from the Ground Range Detected (GRD) Level-1 products produced by the European Space Agency. The RTC processing is performed by UVT.
Methodology
The RTC products are radiometrically (pixel values) and geometrically (pixel position) corrected using a processing chain composed of the appropriate Sentinel-1 toolbox operators made available in the ESA SNAP software Graph Processing Tools.
The flat Earth radiometric calibration is followed by the Flattening Gamma Radiometric Terrain Correction (see D.Small paper) and the orthorectification using the 30m and the 10m Copernicus DEM. The gamma values corresponding to the two polarisations (VH and VV) available in the Sentinel-1 data records are stored as separate bands in the Sentinel-1 RTC collection items (Cloud-Optimized GeoTiff).
With this collection we try to follow the Committee on Earth Observation Data Satellites (CEOS) specifications for Analysis-Ready Data.
Example Notebooks
- To be updated