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Handbook on Radiometeorology 1996

image of Handbook on Radiometeorology 1996

This Handbook provides general information on radiometeorology and covers the following topics: physical characteristics of the atmosphere, atmospheric refraction, particle scattering, atmospheric gaseous attenuation and dispersion, hydrometeor attenuation, radio emissivity, cross-polarization and anisotropy and statistical aspects of atmospheric processes.

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Cross-polarization and anisotropy

By using orthogonal polarizations, two independent information channels using the same frequency can be transmitted over a single link. While the orthogonally polarized channels are completely isolated in theory, some degree of interference between them is inevitable owing to non-perfect polarization characteristics of the antennas and depolarizing effects on the propagation path. The main sources of this cross-polarization at centimetre and millimetre wavelengths are hydrometeor absorption and scattering.

English

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