摘要
有效的路由算法是空间信息系统需要解决的核心技术之一。由于卫星网络的拓扑结构的变化,空间信息系统的路由算法应充分考虑到星间、星地链路连通性特征及卫星网络的拓扑结构演化规律。分析了空间信息系统卫星网络体系结构,研究了星间、星地链路的几何特性,并利用STK仿真软件对星间、星地链路的性能进行仿真,通过分析仿真结果得到了某些星间链路、星地链路的链路连通性特性,进一步分析得到了空间信息系统信息传输网络拓扑结构的演化规律,其可为卫星链路的设计以及后续空间信息系统路由算法的研究提供一定的参考。
An effective routing algorithm is one of the core technologies of space information system that should be de- veloped. Due to the changes of topology structure in satellite network, the connectivity features of the inter-satellite links（ISLs） and satellite-ground links（SGLs）,and the topology structure evolution laws of satellite network should be taken into full consideration when studying the routing algorithm. This paper analyzed the architecture of satellite net- work of space information system and studied the geometric characteristics of ISLs and SGLs. With the simulation soft- ware STK, the characteristics of the ISLs and SGLs were simulated. By analyzing the simulation results, the connectivity features of the ISLs and SGLs were acquired and the topology structure evolution laws of satellite network were also obtained by further analyzing. The features and the laws will provide a reference for the design of satellite links and the research on the routing algorithm of space information system later.
出处
《计算机科学》
CSCD
北大核心
2015年第10期65-70,共6页
Computer Science
基金
基于星间链路的空间信息网络可靠
灵活路由算法研究资助
关键词
路由需求
空间
信息系统
链路特征
Route requirement, Space, Information system, Link characteristics
