Propagation effects on microwave and millimetre-wave earth-satellite links

In discussing scattering from hydrometeors, it is noted with a known rain particle population, it is now possible to predict with considerable accuracy the extinction properties of that medium for frequencies up to approximately 100 GHz. Attention is also given to attenuation prediction techniques, noting that two objectives should be kept in mind in developing these techniques. The first has to do with a global classification or global maps of rain intensity climates; the second concerns a method of predicting slant path attenuation from point rainfall and other meteorological data. Attention is also given to physical models of depolarization, to the prediction of depolarization, and to clear weather propagation effects.