Rain side-scatter interference in the satellite links of the 1990s

In addition to inducing attenuation and depolarization in satellite links, scattering by rain can create intersystem interference. This type of interference was investigated extensively in the 1970s for terrestrial paths, but little has been done to study its effects on modern and future satellite links. Studies of the potential interference created by the scattering of an uplink signal into an adjacent satellite and the inverse case where a downlink signal is scattered into the earth station of an adjacent satellite system are reported. Two computation methods for the interfering power are presented. The first, based on the bistatic radar equation, takes only the first-order multiple scattering into account, whereas the second method, based on the radiative transfer equation, includes higher orders of multiple scattering