【摘要】 卫星集群是一类基于星间协同工作的分布式卫星系统,具有空间结构灵活、数据共享、智能服务等特点。针对当前卫星集群网络仿真平台及其路由算法的研究的不足,基于网络仿真软件NS-3与卫星场景分析软件STK,设计了卫星集群生成模块,搭建了更准确、通用且可扩展的卫星集群网络仿真平台。通过同单一的STK卫星轨道数据对比,验证了仿真平台中卫星运动模块的有效性。对AODV(自组网按需距离矢量路由),DSDV(目标序列距离矢量路由)和OLSR(链路状态优化路由)算法应用在卫星集群网络中的性能进行了仿真。结果表明:OLSR算法在卫星集群网络中性能最优,其分簇和链路状态感知机制可为卫星集群网络路由算法的研究提供借鉴。更多还原

【Abstract】 Satellite cluster is a kind of novel distributed satellite systems based on inter-satellite cooperation with the advantages of flexible structure,data sharing and intelligent service.For solving the problems of the simulation platform and routing algorithms in satellite cluster network,a satellite cluster generation module is designed and an universal and expendable satellite cluster network simulation platform(SCNSP)with higher precision is built on the basis of discrete-event network simulator NS-3 and satellite dynamic model.Compared with satellite orbital data from STK,the validity of satellite motion module in SCNSP is validated.Routing algorithms such as AODV,DSDV and OLSR are simulated in SCNSP and the results show that the mechanisms of topology clustering and link state sensing in OLSR can be used in the design of the routing algorithm for satellite cluster network.更多还原