There is a strange pattern of artifacts in the results of the topographic phase correction. The DEM used is the GETASSE30 that is automatically downloaded. I checked out the original downloaded DEM and don’t see any artifacts in the original data. Any explanations?
As a side note, it’s still not possible to use an external DEM (my study area is north of 60N) in SNAP 2.0.2
This is caused by the amount of tile overlap needed. GETASSE30 is really low resolution. In the Topo Phase Removal increase the tileExtensionPercent and these should go away. You could also use the ASTER DEM but due to distribution licensing, you will need to get the ASTER DEM tiles yourself and place them in the .snap/auxdata/ASTER 1sec GDEM folder.