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全球卫星导航系统为低轨和地面用户提供导航服务已有广泛的研究.中高轨卫星以及深空卫星的定轨、定姿和时间同步,目前主要利用地面测控系统完成,存在设备复杂、投资高、无法同时支持大量飞行器、无法自主运行等缺点.本文研究中高轨卫星和深空卫星利用全球导航星座进行定轨、定姿和授时服务的可行性,实现其扩展应用,寻求全球导航星座作为天基网时空基准的高效途径,使得天基网的自主导航与自主运行成为可能.论文提供了一套解决方案,在不增加卫星设备的前提下,通过星间链路的巧妙设计,实现对远地、深空飞行器的无源导航服务,重点研究了卫星可见性、几何精度因子(GDOP)等内容,进行了定位、定时精度分析,为全球导航星座的建设提供思路.
The global navigation satellite system has provided extensive research on the navigation services for low-earth or ground users.However, the orbit determination, the attitude determination and the time synchronization of medium and high-altitude orbiting satellites and deep-space satellites are mainly accomplished by the ground monitoring and control system with complicated equipment and high investment , Can not support a large number of aircraft at the same time and can not run autonomously etc. This paper studies the feasibility of using orbiting high-orbit satellites and deep space satellites to make orbit determination, attitude determination and timing service to achieve their expanded application and seek global navigation constellations as days The space-time base of base network efficient way, making the autonomous navigation and autonomous operation of space-based network possible.Paper provides a set of solutions, without increasing the satellite equipment under the premise of the inter-satellite link through the clever design, to achieve far And deep space vehicles. The study focused on the satellite visibility and GDOP, conducted the positioning and timing accuracy analysis, and provided ideas for the construction of the global navigation constellation.