A modified routing algorithm for space information network
空间信息网络的改进路由算法研究

In this paper, it studied the topology architecture and routing characteristics of the space information network, then the length of ISL(inter satellite link) and performance of coverage are analyzed. It improved the algorithm for the characteristics of space information network and made some optimizing ways. Then it proposed a new routing algorithm applied for space information network. The new algorithm can find the aggregate of best communication routes between any two satellites, and can reduce link switching as much as possible, thus the system performance is improved.Analysis and simulation results show that the new routing algorithm can enhance the performance of the network, and increase the link reliability, on the other hand, it costs very little link requirements.