Hello,
I am trying to correct the incorrect Saocom geolocation (no precise orbits) using a DEM. I tried Calibration → Multilook → DEM-assisted coregistration with XCorr, and then planned to apply Terrain Flattening (TF) and Terrain Correction.
With DEM-assisted coregistration using XCorr, is the master image also shifted according to the DEM-simulated image? In any case, the slave image shows these artifacts.
Alternatively, I tried SAR simulation to generate an image from the DEM and then use it for coregistration, but the simulated image looks like this:
Finally, I tried the SAR-simulation Terrain Correction, and it seems to work. However, it is not possible to do the Terrain Flattening afterward. If I apply TF first, would it be incorrect due to the wrong georeferencing?
Do you know how should I proceed?
Thank you,
Benedetta
