摘要
低轨星座卫星通信系统由于卫星间的相对运动使卫星的相互可见关系不断变化,这给星上交换的路由选择带来了挑战。研究具有同轨及异轨星间链路,并具有星上交换的24/3/1walker星座网络,将星间链路状态与星座网络的拓扑快照相结合,提出了两种路由优化方案—业务加权的路由优化方案以及基于K短路径的路由优化方案,并进行了仿真研究,得出了有用的结果。
In LEO satellite constellation communication system,the visibility relationship between satellites changes continuously because of the continual movement of satellite;this makes the routing technology to be a big challenge for onboard switching.Considering the 24/3/1 walker satellite constellation with onboard switching that has inter-ISL and intra-ISL,two routing optimizing scenarios based on satellite-link state and topology snapshot were suggested,that is the routing optimization based on traffic weighting and the routing optimization based on k-shortest path.A simulation about these two routing optimizing scenarios provides some useful results.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第24期7842-7844,7850,共4页
Journal of System Simulation
基金
国家"863"高技术研究发展计划(2008AA12A204)
国家自然科学基金(60972061
60972062)
关键词
星座网络
拓扑快照
路由技术
仿真
constellation network
topology snapshot
routing technology
simulation
