基于IP的空间通信网络设计与仿真

摘要

In order to adapt to the development of space communications, a space communication network model based on IP was put forward. The pivotal technologies of the communication network, including the structure of data link, the protocol of data transport, and the structure of data package, etc, were particularly designed. Finally, the communication capacity of the network model Teledesic was contrasted with the commerce communication system. The results of simulation demonstrate that the communication network can effectively reduce the switching frequency and time delay of communications between space craft and communication satellite, provide long-time and stable communications to space craft, and the capacity of average throughput is strong, which meet the demands of future space communications.%为适应目前空间通信的发展,提出了一种基于IP的空间通信网络模型.详细设计了该通信网络的数据链路结构、数据传输协议、数据包结构等.最后,将该通信网络的通信能力与商业通信系统Teledesic进行了对比.仿真结果表明,该通信网络可以有效减少航天器与接八卫星间的切换频率和通信时延,能够长时间给航天器提供稳定的通信连接,网络的平均吞吐能力强,能够满足未来空间通信的需求.