Abstract
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.
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