Some issues on theoretical modeling and data validation of satellite-borne microwave remote sensing

In this paper, research progress in Fudan WSRSC during recent four years on theoretical modeling and data validation is reported. A theoretical model of multi-level, non-spherical scatterers is developed for completely polarized scattering in SAR remote sensing image. The Mueller matrix, coherency matrix and its eigen-analysis are discussed. Comprehensive vector radiative transfer (VRT) theory and numerical approaches for multi-level, non-spherical and densely clustered scatterers are developed for the earth surfaces such as snowpack, vegetation canopy, sea surface, etc. Numerical results simulate the observations of DMSP SSM/I, ERS and other microwave remote sensing sensors. The algorithm and retrieval method of data calibration/validation for satellite-borne microwave remote sensing are discussed with theoretical simulations. Correlation of active and passive remote sensing such as ERS and SSM/I and are simulated and discussed.