I’m trying to do a coregistration of a Cosmo-Skymed interferometric pair in a region where there are some strong topography. If using the coarse/fine coregistration I get some regions of low coherence that seems that are related to the topography. The Doris users guide recommends to perform DEM Asisted Coregistration in such a case and calculate the warp function of the difference of the results obtained from fine and DEM assisted coregistraion. Does the SNAP support this kind of processing?
Yes, you can select Radar > Coregistration > DEM assisted Coregistration (with XCorr)
Can also be done with cross correlation: DEM assisted Coregistration (with XCorr)