一种新的中国区域导航系统星座方案的探讨  

Research on a New Constellation of Regional Satellite Navigation System Covering China

作　　者：杜宇玲[1] 张学军[1] 张军[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《计算机仿真》2007年第2期49-52,133,共5页Computer Simulation

基　　金：国防"十五"预研项目(413220402;2020403);高等学校优秀青年教师教学科研奖励计划资助;北京航空航天大学"蓝天新星"资助项目

摘　　要：基于中国区域导航星座的特点以及我国的实际国情,依据星座的设计方法提出了一种新的由1颗静止卫星和5颗倾斜椭圆同步轨道卫星相结合的6星星座方案,且给出了卫星运行的轨道参数,通过计算机仿真,分析了此星座的覆盖性能。并进一步在考虑摄动影响、空间传输损耗等因素的条件下评估了此星座的导航性能。最终的仿真表明,此星座的卫星数量少,但导航精度依然满足要求,而且其几何精度衰减因子(GDOP)值较小、波动不大,对于建立符合我国国情的区域导航定位系统有一定的参考应用价值。Based on the idea of covering China area, a novel constellation consisting of one geostationary satellite and five inclined elliptic geosynchronous orbit satellites is proposed in this paper. Through a number of simulation tests, the orbital elements of each satellite are designed concretely, and navigation performance of the constellation is analyzed. Moreover, its coverage performance is also evaluated under some factors, such as the geometric dilution of precision （GDOP）, orbital perturbation, space transmission loss and eclipse. What＇s more, this constellation is compared with other constellations. Finally, simulation results show, in this constellation, the number of satellites is small, and the navigation precision is relatively high. Therefore, this is a kind of high performance and economic regional navigation system for China.

关 键 词：区域导航系统 几何精度衰减因子 导航精度 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计]