TPP在星间链路天线指向中的应用

The application study of a trajectory preprocessor in the inter-satellite linkage antenna pointing

中低轨道卫星星间链路天线稳定并快速地指向中继卫星对于建立星间通信链路是非常重要的.本文采用一种轨迹预处理器规划天线的指向.分析了捕获时间的选取范围,并推导了部分公式.为了达到天线最佳的性能,又考虑了天线速度限制,进一步限定了捕获时间的选取.最后,通过数学仿真验证了上述的分析和结论.

The inter-satellite linkage antenna of low-Earth-orbiting satellites pointing to the TDRS stably and quickly is very important to establish the communication linkage with the TDRS. In this article, a trajectory preprocessor is applied for the antenna to arrange its pointing. When the TDRS is considered under the antenna fixed coordinate frame, it moves slowly. Then the acquisition time is analyzed and some formulas are deduced. For achieving the best performance of the antenna, the velocity limit is considered during the picking of the acquisition time. Finally, numerical simulations are tested to validate those analyses and conclusions.