【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。更多还原

【Abstract】 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.更多还原