How to prepare Sentinel-1 images stack for PSI/SBAS in SNAP

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In the step 5, i think you have to apply interferogramme formation operator on the step 2’s results (the backgeocoded stack ) not on the 4 (subset_master_Stack_Deb)

Workflow between SNAP and StaMPS

For S1, you need to apply orbit and TOPS split. Then you can add all products to the backgeocoding. Create a stack of interferograms on the resulting stack. Deburst both the backgeocoded stack and the interferogram stack. Add an elevation band to the interferogram stack. Add debursted stack and debursted interferogram stack to the stamps export. I could update the stamps export to allow multiple individual interferograms. This would allow you to choose slave-slave pairs.

“Deburst both the backgeocoded stack and the interferogram stack”

And what about the ESD operator , can you apply it after backgeocoding ?

TOPSAR Coregistration

Range and Azimuth shift apply the enhanced spectral diversity (see references). Basically it takes advantage of the overlap between bursts to fine tune the coregistration. Generally the backgeocoding is accurate and the ESD can provide a pixel or sub-pixel shift to improve the coregistration. P. Prats-Iraola, R. Scheiber, L. Marotti, S. Wollstadt, and A. Reigber, “TOPS interferometry with TerraSAR-X,” IEEE Trans. Geosci. Remote Sens., vol. 50, no. 8, pp. 3179–3188, 2012 R. Scheiber and A. Mor…

“Generally the backgeocoding is accurate and the ESD can provide a pixel or sub-pixel shift to improve the coregistration”