Analysis of the interference due to differential rain attenuation induced by an adjacent terrestrial microwave system on a double-site diversity Earth-space system

One of the main propagation effects on interference between a satellite sys tem and an adjacent microwave terrestrial path is the differential rain att enuation. in this paper a method to predict rain differential attenuation s tatistics, used for single-site interfered Earth-space systems, is extended to include double-site diversity systems. The modified method is again bas ed on a model of convective rain cells as well as on the lognormal assumpti on for the point rainfall rare distribution at the location under considera tion. Numerical results are presented concerning a realistic interfered sat ellite link using double-site diversity and located in Japan. Because of a lack of available experimental data, our attention has mainly been concentr ated on the examination of the optimum coordination between the adjacent sy stems. Some very useful conclusions are deduced.