Phase and coherence distortion


When I select window size for co-registration according to my datasets and I find that coregistrtaion is done nicely, I suffer from three major issues:

  1. There are many pixels with NaN values in the resampled slave images.
  2. Poor interferogram and distorted coherence.
  3. After phase filtering, interferogram is badly distorted along with the coherence.

Kindly provide the necessary solution.