MODELING X-BAND AND KA-BAND EMISSION FROM LEAFY VEGETATION

Emissivity of agricultural crops is theoretically estimated through a model based on the Radiative Transfer Theory, and then compared with experimental data collected at X and Ka bands. The test is in general positive. The model and the experimental data agree in showing the ability of a dual-frequency radiometer system to discriminate different field types. The importance of a realistic choice of the dimensions, orientation and relative position of the scattering elements within a vegetation layer is pointed out.