同地迹八颗IGSO卫星区域导航星座分析

The analysis of regional navigation constellation composing eight IGSO satellites

设计了由八颗倾斜圆轨道地球同步(IGSO)卫星组成的导航星座.仿真分析表明:该星座具有只需维持覆盖区域不变,无需进行队形保持的优点.对我国绝大部分地区定位精度在20 m以内,北部、西部偏远地区不超过50 m;导航性能优于八颗非同地迹ISGO卫星星座.对亚太地区多重覆盖能力远高于四颗近圆地迹轨道星座;与大椭圆轨道相比,具有卫星轨道保持消耗燃料少,用户终端技术要求低等优点.

The navigation constellation composed of eight inclined globosity synchronous orbit （IGSO） satellites is designed. The simulation results show that the need of keeping invariability of cover areas instead of keeping relative phase is an advantage for this constellation. Its navigation precision to the most areas of our country is within 20 meters, and remote area of north, west do not exceed 50 meters. Navigate performance is superior to 8 different ground mark IGSO satellite constellation. Compared with great eccentricity orbit, this constellation orbit need less fuel, and lower user terminal technology requirement.