POLINSAR COMPLEX COHERENCE ESTIMATION BASED ON SIMILARITY TEST OF COVARIANCE MATRIX

摘要

A new polarimetric SAR interferometry (PolInSAR)rncomplex coherence estimation method is proposed ,rnbased on a similarity test of the Complex Wishartrndistributed PolInSAR covariance matrix. The advantagernof this method is to take both polarimetric andrninterferometric information into the estimationrnprocedure to select the most similar candidate pixels forrnsample average, and thereby produces more accuraternand reliable estimation. The derived similarity testrnindicator shows great sensitivity to both the polarimetricrnand interferometric property. The efficiency of thernproposed estimation scheme is demonstrated E-SARrnPolInSAR data.