关键词: 矢量辐射传输理论, 后向散射系数, 水稻, 微波遥感

Abstract: 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.

Key words: VRT, backscattering coefficient, rice, microwave remote sensing