基于轨道动态模型的卫星天线指向功能测试方法

Test Method of Satellite Antenna Pointing Performance Based on Dynamic Orbit Model

针对卫星天线指向算法工程实现准确度测试中存在的数据时间偏差处理问题,提出一种基于轨道动态模型的卫星天线指向功能测试方法。通过对时间偏差模型的分析,实现对由卫星发出的带有时标的指向角度遥测信息和没有时标的指向角度控制信号相对于卫星指向计算理论角度的误差测试;通过时间偏差消除算法成功将无时标数据的误差测试结果与有时标数据误差测试结果保持一致。在对同一轨道条件测试时,两类数据测试结果均在0.001°之内,可实现对卫星天线指向算法工程实现准确度的可靠测试。

A test method of satellite antenna pointing performance based on dynamic orbit model is designed, which is used to solve the problem of timing deviation of data in the test process of satellite antenna pointing performance. With the analysis of the timing deviation model, the test of error is finished, which includes the error between the antenna pointing angle data from telemetry with timing information and the theoretical angle, and that between the antenna pointing angle data from control signal without timing information and the theoretical angle. Through the algorithm of eliminating timing deviation, the test error results of antenna pointing angle with and without timing information are unified, both of which are within 0.001° when the test process is based on the same orbit condition. Thus the method proposed can get the reliable results of engineering design accuracy of satellite antenna pointing algorithm.