Snaphu export problem

s1tbx
#1

Hello,
I did the usual steps for DEM generation from S1 SLC data (coregistration, interferogram formation, deburst, Goldstein filtering) . The snaphu export works normally and it creates the header of the unwrapped VV phase : UnwPhase_ifg_VV_01Jan2016_13Jan2016.snaphu.hdr. However, in the snaphu.conf file the command line created doesn’t correspond to the same header, it creates the command for the VH phase (snaphu -f snaphu.conf Phase_ifg_VH_01Jan2016_13Jan2016.snaphu.img 2993) . So I could not import the product as the phase and the unwrapped phase aren’t the same!
Could you have any idea of this problem?

Thank you in advance

#2

if you are working with dual-polarized data, I would strongly recommend to only select VV in the first step of TOPS coregistration. This reduces the size of your products and processing time by 50% and prevents that the two polarizations get mixed up in the export.

#3

Thanks @ABraun for the advice, I will try that :wink:
And just a question, why in Interferometry we favor the VV polarisation?
Kind regards