地球同步卫星轨道漂移对天线指向的影响分析

地球同步卫星轨道漂移对天线指向的影响分析

内容简介：位于地球同步轨道的卫星由于受各种空间因素的影响，其运行轨道会随时间逐渐偏离地球赤道面．轨道倾角由0°逐渐增大。这种轨道倾角漂移会导致对地通信的固定波束天线指向偏离地面站，引起天线指向失配误差，造成通信质量下降甚至丧失。文章分析了轨道漂移对天线指向的影响，并给出了天线指向调整的策略。

Abstract：Due to various causes exerted on the satellite on geostationary orbit, the satellite orbital parameters are no longer constant and its movement trajectory plane will be inclined from the equatorial plane. This makes the fixed beam of antenna deviate from the earth station, causing pointing mismatch error. Degraded communication quality and even failure may be resulted in. In this paper, the influence on antenna pointing is discussed due to satellite drift, and a pointing adjustment strategy is provided.

作者：姚永田, 杨淑丽, 钟鹰,

关键词：地球同步卫星, 轨道漂移, 天线指向,