I want to do the polarimetric decomposition of Sentinel-1, IW, SLC images. I’m processing 3 images of 3 different dates of the same month and i followed these steps: (1) orbit file, (2)Top SAR split (IW2), (3)Calibration, (4)Back Geocoding , (5)TOP SAR Deburtst, (6)Matrix generation (C2), (7) Multi looking with success.
The next step which failed is the Polarimetric speckle filter. I used sigma Lee filter and all the bands of the resulted product appear as black layers . My question is; Why is the polarimetric speckle filter not working for co-registered images , yet it was successful for a single image)??? If the polarimetric speckle filter is not compatible for a series of images which speckle filter should I use for coregistered images??? I used the multi temporal speckle filter but I’m not happy with the results.