Model for the Microwave Backscattering Mechanisms of Rice

Based on the Vector Radiative Transfer(VRT) theory and the characteristics of the SAR technology,several sub\|models for rice backscattering are constructed,including the leaf scattering model,the leaf extinction model,the trunk scattering model,the trunk extinction model and the water reflection model.Then an integrated model for the first\|order scattering mechanisms of rice,including all the main physical processes,is achieved.Based on the simulation results,it is discussed that the variations of the rice backscattering coefficient with the date,incidence angle,wave band,and polarization.