DEM generation after phase unwrapping of Interferogram

how to generate DEM once interferogram is generated ?

For generating DEM after Interferogram you need to follow the below steps…

  1. Topographic phase removal
  2. phase filtering
  3. Multilooking (ML)
  4. phase unwrapping using snaphu (snaphu is a platform dependent phase unwrapping software, it works in linux os)
  5. phase to height conversion

Better to follow ESA DEM generation procedure of address given below

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Topographic phase removal is not required for DEM generation. It is required for displacement generation.