The application research of global navigation constellation for HEO (high earth orbit) satellites and deep-space satellites
The application research of global navigation constellation for HEO (high earth orbit) satellites and deep-space satellites
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DOI：
10.1360/132011-327
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Wenwen Zhao
中科院分区：
文献类型：
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作者：
Wenwen Zhao
全球导航卫星系统（GNSS）为地面用户和低轨卫星（LEO）提供导航已经得到了广泛的研究。目前，HEO卫星和深空卫星的定轨、定姿、时间同步主要依靠地面测控系统，地面测控系统设备复杂、投资高，无法同时支持大量的航天器，也无法实现自主运行。本文研究了HEO卫星和深空卫星的定轨、定姿、时间同步的可能性，提出了一种基于地面测控系统的高精度卫星定轨、定姿、时间同步的方法，并对该方法的可行性进行了分析以及高轨卫星和深空卫星与全球导航星座的时间同步，从而实现了全球导航星座的扩展应用，为全球导航星座作为星座网的时空基准找到了一条高效的途径，提出了一种通过巧妙设计星间链路实现高轨卫星和深空卫星无源导航的方案，在不增加星上设备的情况下，对可见星个数和GDOP（几何精度衰减因子）值进行了研究，并对定位和授时精度进行了分析，为全球导航星座的建设提供了新的思路。
It has been widely studied that GNSS(global navigation satellite system) offers navigation for Ground-Based users and LEO(low earth orbit.) users.At present,it mainly depends on Ground-Based measurement and control system that HEO satellites and deep-space satellites determine their orbits and attitude,and synchronize their time.The Ground-Based measurement and control system which has complex equipment and high investment can't support abundant aerocrafts at the same time,and can't operate autonomously.This article studied the possibility of orbit determination,attitude determination,and time synchronization with global navigation constellation for HEO satellites and deep-space satellites,and consequently achieved the extended applications of global navigation constellation.It found out a high efficient way for global navigation constellation to operating as time and space reference for constellation networks,in order that constellation networks autonomously operate and navigate.And it also putted forward a solution to realize passive navigation for HEO satellites and deep-space satellites by skillfully designing the links between satellites,without increasing equipment on satellites.The research focused on the number of visible satellites and GDOP(geometric dilution of precision) value.The precision of positioning and time determination was also analyzed in order to provide new ideas for the construction of global navigation constellation.