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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。
This paper gives the calculation formula of the polarization angle of the earth station antenna when receiving the polarization radiation signal from the communication satellite. In communication systems that use linearly polarized radiation, the polarization orientation of the earth station antenna varies with its geographic location. This paper uses coordinate transformation method to derive a practical formula. In the erection and adjustment of the earth station, the polarimetric orientation can be calculated simply by using the published longitude and longitude positions of the satellite and the pointing data of the satellite antenna, together with the latitude and longitude of the ground of the erected earth station. The formula given in this article not only for television receiving stations, but also for communication earth stations.