IGSO星座分析与优化设计

IGSO Constellation Analysis and Its Optimal Design

通过对典型IGSO星座摄动影响下星座构型分析,得到影响卫星轨道的主要摄动因素,并对IGSO星座进行长期演化分析,同时评价星座的稳定性。提出IGSO星座的优化设计方法:以一种双"8"字形、共轨道面的IGSO星座构型为例进行星座设计,设计变量包括卫星数目、轨道倾角、2个星座的交点地理经度,每个星座中第1颗卫星的相位角。采用多目标优化算法得到优化结果,以及星座的三维结构和星下点轨迹。分析结果表明方法合理有效,该星座构型具有较好性能。

By analyzing the structure of typical IGSO constellation with perturbation, acquire the main perturbation factors influencing satellite configuration. Meanwhile, evolving analysis on the IGSO constellation for a long period is given out, and the stability of the constellation is evaluated. An optimal method of the IGSO constellation is put forward; present an example for constellation design, which designs in the form of double ＂8＂ figure and IGSO constellation in the same plane. Design variables include the artificial satellite number, orbit inclination angle, geographic longitude of intersection of two constellations, and every constellation is hit by the 1st artificial satellite phase angle. Adopt multiple targets optimization algorithms to be optimized result, and count a trajectory under constellation 3-D structure and star track. The result shows that this method is reasonable and the constellation construction capability is better.