Hello,

When I use the non-linear deformation processing, I got some questions even after reading the related discussions on the forum. Hope I can get your answers.

1、In sarproz, if “smart” is used, then linear deformation won’t be estimated. I want to know, is the linear deformation phase firstly removed from the interferometricc phase, and nonlinear deformation is estimated from the residual phase which contains atmosphere phase? or sarproz directly extract the nonlinear deformation from the whole interferometric phase ?

2、This question is related with question 1. The nonlinear is assumed to be temperal correlated,so a low pass filter is used. I’d like to ask, when compared with linear deformation, is nonlinear deformation acts as high frequency in time domain, and linear part act as low frequency ?

3、I suppose any deformation contains some nonlinear part, even if the linear part dominates the deformation. Since sarproz can’t estimated linear&nonlinear at the same time, should I always run a linear processing and a nonlinear processing, and then add the 2 results to get my final deformation? And could you tell me what’s the name of the deformation result files?

Thank you!

Best regards