摘要
针对COMPASS系统的PNT(Position,Navigation,and Timing)性能在全球不均匀的现状,提出采用48星极轨或玫瑰星座的LEO(Low Earth Orbit)通信卫星对COMPASS系统进行性能增强的方案,并对其覆盖性能及各纬度带的平均覆盖仰角进行分析。在此基础上,研究并探讨了LEO星座通信卫星增强的导航系统组成和原理,并以位置精度因子和可见卫星数为指标,对比分析两类LEO星座增强下的导航系统性能。
According to the status that COMPASS system＇s PNT（Position, Navigation, and Timing） is asymmetry in the worldwide, the polar constellation and rose constellation are proposed to enhance the COMPASS, and then their coverage performances are simulated and analysed. Furthermore, the structure and principle of enhanced COMPASS system are discussed. By using the index of position dilution of precision and the number of visible satellites, the performance of enhanced system is comparatively analysed.
出处
《电讯技术》
北大核心
2013年第2期131-135,共5页
Telecommunication Engineering
