【摘要】 针对使用星际链路ISL(intersatellite links)的LEO卫星系统,提出一种基于ATM的鲁棒路由算法。只要源卫星与目的卫星之间存在一条通路,二者便可以实现通信。本文关注的是路由算法中的链路诊断部分。源卫星首先利用收集的不可迭信息构建离散时间动态虚拓扑图(DT-DVTG)(discrete-time dynamic virtual topology graph),然后通过概率的方法诊断出最可能出现故障的链路,再经过快速的测试可精确定位故障链路。由于链路诊断过程支持动态路由,使鲁棒路由算法在保持原有动态路由算法各项性能指标的基础上进一步提高了鲁棒性。更多还原

【Abstract】 A robust ATM-based routing algorithm for LEO satellite systems employing ISL is proposed,by which a source satellite can communicate with any end satellite,so long as a path exists between the source satellite and the destination satellite.The focus of this paper is on faulty links’ identification part of the routing algorithm.At first,a source satellite builds discrete-time dynamic virtual topology graph(DT-DVTG)based on collected unreachable path in- formation,then it can detect the most probable failed network links through probability method,and the actual failed links can be accurately pinpointed through quick and autonomous testing.Because of its supporting dynamic routing concept,the robust routing algorithm can be further improved the robustness on the ground of the performance of the original dynamic routing algorithm.更多还原