地球站天线与卫星天线极化取向对准的计算方法

本文给出了接收通信卫星线极化辐射信号时地球站天线极化取向角的计算公式。使用线极化辐射的通信系统中,地球站天线极化取向随其地理位置而变化。本文利用坐标变换方法导出了实用的计算公式。在地球站的架设、调整中,只要利用所公布的卫星定点经度位置和卫星天线波束指向角数据,加上所架设地球站的地面经纬度,便可算出极化角取向。本文给出的公式不仅用于电视接收站,还可适用于通信地球站。

A CALCULATION FORMULAR OF THE POLARIZATION ALIGNMENT ANGLE OF EARTH STATION ANTENNA

A calculation formular of the polarization alignment angle ofearth station antenna,receiving liner polarized radiation signal from thecommunications satellites,has been given in this paper.The polarizationalignment angle of the antenna of an earth station,which operates in theliner polarized communications system,is variable upon its location.By useof coordinate transform,a pragmatical formular is produced.In the installationand adjustment of an earth station,the polarization alignment angle can beeasily calculated as far as finding out the announced longetude of the satellitelocation and bore-sight of its antenna,and the longetude and lagitude of thebeing installed station.The formular given in this paper is not only correctefor the TV receiving stations,but suitable for the communications earthstations as well.