On Scattering Model Decomposition with Pol-InSAR data

Abstract:
This paper presents scattering model decomposition technique with Pol-InSAR data sets. The target model decomposition based on the scattering mechanisms corresponding to surface, double, and volume scattering, is one of the powerful tools to analyze and classify the ground surface conditions with fully polarimetric SAR data. However, we sometimes meet difficulty that the power of the decomposed component(s) becomes negative. This is caused by assumptions in the decomposition technique. The number of observables is limited in the fully polarimetric SAR data, therefore some assumptions are necessary. However, when an interferometric pair of fully polarimetric SAR data is available, additional observables can be obtained. These new observables will be available to resolve the difficulty of negative power in the conventional decomposition technique. In this paper, we consider the scattering model decomposition technique with Pol-InSAR data, and propose some modifications for the decomposition.