一种区域性覆盖星座设计与仿真方法

主要研究了对地面目标进行连续覆盖的星座设计问题。首先分析了星座最小仰角与星下点轨迹、轨道高度的关系,然后推导了对覆盖性能有重要影响的星间覆盖间隔时间和轨道面覆盖间隔时间的计算公式,提出理论算法与STK仿真相结合优化星座设计的方法,给出适合于中国的非静止轨道星座方案。仿真结果表明,该星座能对中国实施24h不间断覆盖通信。

A Design and Simulation Method of Non-GEO Satellite Constellation for Regional Coverage with STK

In this paper, we study the design of constellation with continuous coverage for ground target. First, we analyze the relation of minimum elevation of constellation with sub-satellite track and orbit altitude;then we derive the calculation equation of intersatellite coverage interval time and orbit plane interval time which mainly influence the covering performance;finally we propose the optimized design method of constellation based on the combination of theoretieal algorithm with STK simulation and present the concrete constellation scheme for China. The simulation results indicate that this constellation is able to implement uninterrupted coverage for 23, hours for China.