基于基变换的地球站天线视角计算及方位角、俯仰角之间的映射关系

Calculation of earth station antenna angle of view based on base transform and mapping relationship between azimuth and elevation angles

作为卫星通信的重要应用之一,卫星数字广播电视应用越来越广泛。为了保证卫星数字广播电视的安全播出,需要对该业务的无线电参数进行监测。而保证监测数据准确性的首要条件是:精确对星。本文提出基于基变换的地球站天线视角计算,通过引入线性空间中坐标系旋转、基变换等数学工具,对地球站天线视角进行理论推导,并根据得到的解析解推出方位角与俯仰角之间的映射关系,实现了在卫星经度未知情况下,对赤道上空静止轨道卫星进行轮巡监测的目的,这在实际工作中有着很强的实践意义。

As one of the important applications of satellite communication, satellite digital broadcasting and television is more and more widely used. In order to ensure the safe broadcasting of satellite digital broadcasting and television, it is necessary to monitor the radio parameters of the service. The primary condition to ensure the accuracy of monitoring data is accurate star alignment. In this paper, the angle of view calculation of earth station antenna based on base transformation is presented. By introducing mathematical tools such as coordinate rotation and base transformation in linear space, the angle of view of earth station antenna is deduced theoretically, and the mapping relationship between azimuth angle and elevation angle is deduced according to the analytic solution. The wheel patrol monitoring of geostationary orbit satellite over equator is realized when the longitude of satellite is unknown. The purpose is of great practical significance in practical work.