摘要
现有卫星导航系统的PNT服务无法提供全空域服务,LEO卫星星座、星间链路是未来多源导航信息源的重要组成部分。本文根据极轨道星座设计理论,在LEO卫星个数较少的条件下,设计了一个LEO导航增强星座,并分析了该星座的全球覆盖性。然后,根据卫星间的几何特性,在星座中建立了星间链路拓扑结构,并采用图论知识讨论了该星间链路拓扑结构的连通性和稳健性。最后,分析增加5颗GEO卫星后的星座星间链路性能。
The PNT service of the existing satellite navigation systems can not provide full airspace services. LEO satellite constellation and inter-satellite link are important parts of future multi-source navigation information. Under the condition of fewer number of LEO satellites,a LEO navigation enhancemen constellation is designed and the coverage performance of this constellation is discussed. A satellite communication network topology is established according to the geometric features of LEO constellation,and the connectivity and robustness of this constellation configuration are studied by using graph theory. In the last,the connectivity and robustness are analyzed when 5 GEO satellites are added to the LEO constellation.
作者
韩松辉
杜兰
李国重
郭肃丽
黄文华
骆亚波
HAN Songhui;DU Lan;LI Guozhong;GUO Suli;HUANG Wenhua;LUO Yabo(Information Engineering University,Zhengzhou 450001,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China;CETC Key Laboratory of Space Information Application Technology,Shijiazhuang 050081,China;School of Traffic and Transportation Engineering,Changsha University of Science ＆ Technology,Changsha 410076,China)
出处
《测绘科学技术学报》
CSCD
北大核心
2018年第2期111-116,共6页
Journal of Geomatics Science and Technology
基金
国家自然科学基金项目(40974009
11373001)
关键词
极轨道星座
LEO卫星
GEO卫星
星间链路
图论
polar orbit constellation
LEO satellite
GEO satellite
inter-satellite link
graph theory
