I am a new user of SNAP and I have difficulty understanding the big idea among the abundance of information available.
I started looking into inSAR principle, the tutorial about sentinel+SNAP, and the ones written by Luis Veci about Interferometry “TOPSAR and Stripmap”.
Now here is what I want to do : I am trying to obtain DEM of mountain (chinese ones), we were using software like Global Mapper before, but we were hoping that sentinel data could give us a better accuracy, or at least data that are RAW and not already process like ASTER GDEM (all angles and slope are smoothen on those data, so not really useful data).
So it seems to me that I just need to follow “Stripmap Interferometry with Sentinel-1 Tutorial” by Luis Veci, and select TOPO mode when exporting in Snaphu.
If it’s not at all what I should do please tell me^^. Moreover can someone help me understant the difference between those two tutorial TOPSAR and Stripmap ? And another thing, when I will obtain my coherence value, what can I consider has a good coherence for DEM ? So that I don’t start the calculation for nothing.
Thank you for your help, and for everybody writting all those tutorials.