Hello. I’m using the SAR Simulation Terrain Correction Operator on a S1A GRD image. When I do the SAR Simulation it works fine (Simulatd Intensity and Sigma similar to original one). But when I try the SAR Simulation Terrain Correction there is a good computing of the local incidence angle but no output (black image) for the sigma corrected band.
I am using a local DEM in tiff.
Thanks, they look quite similar, I’ve tried different window sizes for the coregistration, and I’ve added GCP (13 points) manually.
When I do the Coregistration only it works well, I’ve got the stack with master and slave images.
But when I try to carry out the “SAR-Simulation Terrain Correction” which includes the SAR Simulation + Coregistration + Terrain correction, then the coregistration does not work well (the warp part), I’ve got the message “Sigma_VH does not have enough valid GCPs for the warp”