RET Scattering Function Optimisation in Vegetation Media using Inverse Convolution

This paper presents a method to improve extraction the radiative energy transfer (RET) theory input parameters for application in vegetation attenuation modelling. The input parameters for this model, which are extracted from specific measurement data, are normally influenced by the radiation pattern of the receiver antenna. A new method to improve the accuracy of the scattering function parameters obtained from measurements is presented. This method is based on the inverse convolution, allowing mitigation of the receiver antenna radiation pattern effects on the extracted parameters. The method was tested with measurements at 20 and 40 GHz using several different receiver antennas.