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Analysis of Approaches for a Complete Estimation of Parameters in Agricultural Crops Applications Using Polarimetric SAR Interferometry

Abstract The application of Polarimetric SAR Interferometry (POLINSAR) to the retrieval of parameters from vegetation scenes modelled by the RVoG and the OVoG requires the solution of a highly nonlinear problem. In this paper, some strategies used to solve this problem are described. They are based on a geometrical approach, originally presented for RVoG case, and in a numerical method implemented with a genetic algorithm. The discussion about these methods is illustrated with indoor data from a corn crop. In addition, the accuracy of the direct model has been investigated in order to point out its limitations and the sensitivity of its parameters.