正交圆轨道星座设计方法研究

Research on the design of orthogonal circular orbit satellite constellation

讨论了全球覆盖正交圆轨道星座设计方法。推导了极轨道星座实现球冠覆盖时星座参数的精确计算公式,分析了精确计算公式与Beste的近似计算公式之间的关系,明确了近似计算公式的应用条件。提出采用极轨道星座结合赤道轨道星座构建全球覆盖正交圆轨道星座的思想,推导了正交圆轨道星座的参数计算公式,给出了一些星座方案,并与全球覆盖极轨道星座进行了覆盖性能的分析和比较,说明了正交圆轨道星座设计方法的有效性。

The design method of the orthogonal circular orbit satellite constellation supporting global coverage is studied. The precise constraint equation for polar constellation supporting coverage beyond specified latitude is derived and the relationship between the precise constraint equation and Beste＇s approximate constraint equation is analyzed. The applicable condition of Beste＇s approximate constraint equation is also indicated. The idea of orthogonal circular orbit satellite constellation, which is a combination of polar orbit constellation and equator orbit constellation, is proposed and the constellation parameter constraint equation is derived. Some orthogonal circular orbit constellation schemes are presented. By making a coverage performance comparison of the orthogonal circular orbit constellation schemes with corresponding polar constellation schemes, the validity of the orthogonal circular orbit satellite constellation is verified.