Interferometric Phase Estimation in Polarimetric SAR Interferometry

Polarimetric synthetic aperture radar (SAR) interferometry has been developed for the estimation of accurate terrain elevation and vegetation parameter. One of the important process steps is to estimate the interferometric phases of effective scattering centers which located in different height positions and represented different scattering mechanisms. The interferometric phases can be acquired by the fully polarimetric SAR scattering decomposition. The coherence optimization algorithm and the ESPRIT algorithm are analyzed for the interferometric phase decomposition. SIR-C/X-SAR L-band fully polarimetric data are used to estimate interferometric phase, experimental results verify the validity of the methods