卫星通信系统中降雨的去极化效应估计

Estimation of Rain Depolarization Effect in Satellite Communications System

随着对卫星通信容量要求的日益提高,极化复用技术由于能使卫星通信系统容量加倍,因此越来越多的应用到卫星通信系统上。然而降雨引起的去极化效应是影响极化复用卫星通信系统设计的一个重要因素,需要在系统设计时对此进行估算。文章不仅给出了衡量降雨去极化效应大小的指标,还给出了ITU推荐的估计方法,最后通过计算机仿真,得到了符合某型号实际的降雨导致的去极化效应的估计结果,为实际工作提供了重要的理论指导。

With the rising requirement of satellite communications bandwidth, dual-polarized technology is applied in many satellite communication systems,which can double the communication abilities. Depolarization of electromagnetic waves passing through rain mediums is of crucial importance to the design of new dual-polarization satellite communication sys-tems. This paper focuses on estimation of rain depolarization effect in satellite communication systems using the method of ITU-R,and makes some computing simulation. The results can help us designing satellite communication systems.