TerraSAR-X for Generating DEM

Microwave Toolbox
1

Is it possible to generate DEM from TerraSAR-X with SNAP? If yes, can i know the ideal steps/graph for it? Thank you!

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Yes, if you have an InSAR pair (same incidence angle, same orbit, same polarisation) as SSC product you can calculate a DEM.
I used this workflow in an earlier SNAP version:

Preprocessing

  • Co-register the images
  • generate the interferogram
  • apply goldstein filtering
  • apply multilooking
  • write to file

image

Phase unwrapping

  • create a snaphu folder
  • run phase unwrapping
  • re-import the data from snaphu
  • run phase to elevation
  • run doppler correction and use the same reference DEM as before
  • export the results to geotiff

Free Grand Canyon data can be found here: 03/10/2008 and 03/21/2008

Let me know, if it works.

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