Subtracting phase of the earth flat and the topography phase

s1tbx Interferometry
#1

Hello

When the interferogram is formed, when it is important to subtract the topography phase?
Is it recommended to subtract always the earth flat phase?

thank you
marthabm

#2

Flat earth phase removal is always recommended, when your image covers a large area and the curvature of the earth plays a role.

For topographic phase removal, please check here: What is different of DInSAR and InSAR

#3

Thank you Andreas for solving doubts.

Marthabm

#4

Dear ABraun,
While running StaMPS code in Matlab, I’m using default values. In stamps(6,6) command GETPARM: subtr_tropo=‘n’ is presented. Is it OK or else we have to change to subtr_tropo=‘y’?

If we will keep default values, what is the effect for the final result?

#5

Please have a look here about its impact on the processing: StaMPS/2-4_StaMPS-steps.md · master · Matthias Schlögl / gis-blog · GitLab

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