Polarimetric Signatures for Interferogram Quality Enhancement

Abstract:
Polarimetric synthetic aperture radar interferometry (PolInSAR) is a technique based on the coherent combination of radar polarimetry and SAR interferometry. Its 1st technique called the coherence optimization based on the eigenvalues is used to enhance the quality of SAR interferograms. An alternative coherence optimization algorithm which consists in looking at the possible coherence for every combination of elliptical polarizations extracted from the polarimetric signatures and selecting the highest one is also developed, tested and compared with the coherence optimization method. It is shown that, the coherence algorithm based on polarimetric signature performs better than the 1st approach but it takes a longer execution time.