Radio frequency interference suppression for stationarity analysis of L-band PolSAR data

Radio frequency interference (RFI) suppression has been an essential technique in synthetic aperture radar (SAR) imaging. And at L-band and shorter wavelengths, interferences might significantly degrade the image phase and influence the estimation of some sensitive parameters like interferometric coherence or polarimetric indicator. In this paper, when analyzing the stationary characteristic of media using Time-frequency decomposition techniques, a RFI suppression method for focused PolSAR image is applied. Experimental results demonstrate that interference suppression can improve the interpretation of polarimetric stationarity indicator. The test data is acquired by the ESAR sensor at L-band.