Generate an interferogram with SNAP

[ABraun]

Conventional DInSAR requires high coherence between your images which is probably not given for this long time. Here is why: Subsidence map in 3d view - #21 by ABraun

PS InSAR is not easy to learn and implement. Please have a look at this comment on how to start:

Difference between vertical and LOS displacement

a good start is the work of Andy Hooper: http://sismologia.ist.utl.pt/files/Hooper_2004.pdf http://eoscience.esa.int/landtraining2017/files/materials/D4T1a_P.pdf https://web.stanford.edu/group/radar/people/Hooper_Thesis.pdf But we also have an own category about this in our forum: About the STaMPS category

More important is this:

Difference between vertical and LOS displacement

It is very demanding processing, I would guess that it takes several months of solid work&studying to understand what is going on. You might be able to duplicate someone else’s processing but that is always risky as every case is different and without deeper understanding of InSAR and PSI troubleshooting will be hard. Whoever gave you this task should also understand this. I hope this helps!