RAIN-INDUCED CROSS-POLARIZATION AT CM AND MM WAVELENGTHS: A COMPARISON OF EXISTING MODELS

摘要

The performance and reliability of a dual polarized microwave line-of-sight link operating above 10 GHz gets degraded by rain. Among the various degrading effects, the important ones are attenuation and depolarization. In this paper, depolarization effect of rain has been dealt at length. Three models which can be used to estimate depolarization have been compared. The crosstalk levels are estimated for various dropsize distributions, canting angles and vertical and horizontal polarizations .These results indicate that the performance of dual polarized links will be degraded to unacceptable levels during heavy rain.