Electromagnetic Intersystem Interference Due to Hydrometeor Scattering: Development of a Microphysical Model

This paper presents a physically-based model to investigate the bistatic radio intersystem interference caused by hydrometeor scattering. The precipitation phenomena are reproduced accounting for both the rainfall process, through the MultiEXCELL model, and the melting layer extending above the rain height. For the latter, the adopted approach accounts for altitude-dependent variations of the physical parameters, based on the thermal equation governing the melting process of the ice particles. The interference is evaluated through the bistatic radar equation (BRE), relating the transmitted power with the interfering one. The microphysical properties of the precipitation particles are analyzed to accurately reproduce their scattering and dissipative properties. The model is validated against the ITU-R DBSG3 database, comparing the scattering coupling contribution of rain to the one induced by the melting layer.