Two XPD frequency scaling models using quasi-physical parameters to characterize Earth satellite propagation channel

Attenuation and depolarisation of the tropospheric propagation channel are limiting factors conditioning link availability for systems using frequency reuse. The depolarisation behaviour of the channel is more difficult to predict than attenuation due to the contribution of parameters, such as hydrometeor shapes, types and alignment as well as size distribution. The propagation medium is analysed from a quasi-physical structure point of view. Two models to scale the XPD vector to B0 (12.5 GHz) and B2 (30 GHz) Olympus satellite beacons using quasi-physical parameters derived from the transmission matrix measured using the B1 (20 GHz) beacon are explored as a tool to identify the medium properties.