Some Question of Debrust step

s1tbx
#1

Hello body,

I have some question with S-1 TOPS debrust.

  1. if I process only 1 brust of the Sentinel-1 image, do I need to apply debrust step?
  2. as ESA tutorials mention we should apply debrust after interferogram step, could I apply debrust after back-geocoding and ESD step, before interferogram step? So that I can save time for one more debrust for InSAR stack if I want to prepare StaMPS output.

Another thing is that if I only use 1 brust of the Sentinel-1 image, I think it is not necessary to apply S-1 ESD, is it right?