Trying to perform 3 pass differential interferogram


Hello guys i am trying to perform 3 pass differential interferogram. as soon as i click the option i am getting source product @parameter not found in operator. I want to know am i supposed to perform additional process in some other location so i dont get the error, i could not find much documentation on how to perform it so any help or direction is greatly appreciated.



In fringe 2017 someone commented about a bug in 3 pass differential interferogram which made the tool unreliable. But also they commented that having DEM for almost every part of the world the results of a 3-pass interferogram is going to be worse than if you use DEM to generate the topographic phase. Is your study zone a polar zone without DEM coverage?