一种通信卫星天线性能预测技术

Prediction Technology of Performance for Antenna on Telecommunication Satellite

针对通信卫星天线性能预测问题,提出了采用几何绕射理论(GTD)算法进行仿真分析,利用仿真分析软件,计算了无星体和有星体影响情况下的通信卫星天线性能,通过优化天线布局参数改善了天线间的耦合度。结果表明,该方法可实际应用于优化通信卫星天线设计,达到提前预示整星条件下天线性能的效果,提前规避天线受到星体影响后性能变化较大的风险。

This paper mainly focuses on the prediction analysis of performance of antenna on tele- communication satellite. The GTD algorithm is presented to simulate and analyse the problem. With the help of software, the paper simulates the performance of antenna with and without the whole satellite body environment. Through optimizing layout parameters of antenna, the coupling degree between an- tennas is increased. Numerical results show that the method is correct and can be used to optimize the satellite antenna design. The method can predict the performance of antenna on telecommunication satel- lites and avoid the risk of the big performance change after mounting antenna on satellites.