The unwrapped phase is the same as the wrap phase

Microwave Toolbox
1

Dear all,
I can process interferograms successfully and export to SNAPHU for unwrapping. The unwraping procedure is fine (no error mesage). But when I imported the unwrapping results into SNAP and found the unwrap phase looks the same as the wrap phase. The fringes are apprent in the unwrapped interferograms.
What is the probelm?

Regards,
Wei

wrap_phase
wrap_phase.jpg1713×899 1.32 MB
unwrap_phase
unwrap_phase.jpg1714×897 1.32 MB

2

Which DEM did you select in corregister step?

If signal is topography, it is “amplified” by the baseline. large PB leads to a hard phase unwrapping.

What is the long of the PB?

even though, I don’t think it’s the case in S-1, (might be)

3

Hello, I have the same problem.
i used srtm 1sec. and for PD is 145 m.
Thank you in advance