Research On The Architecture Of Space Information Transmission Network

Spatial Information Transmission Network (SITN) is an integrated network that it includes Space-Based TT&C Networks and Ground-Base TT&C Networks. It provides a unified platform for space information acquisition, storage and distribution. It also enables unified management of space information, to achieve efficient sharing and utilization. With the continuous increase space activities and the constant deepening of space exploration,the past traditional spatial information transmission cannot meet the needs of complex space operations. To speed up the architecture of our Spatial Information Transmission Network building, we need to study the advanced theory of current international space powers. Based on the simulation tools, we provide our own spatial information transmission network architecture.This paper studies the current international and domestic transport architecture for space information in-depth. Then, with the specific situation of our country, this paper given our own architecture model of SITN, and use simulation tool STK, the covering analysis and communication link analysis also is carried out. Finally, this paper describes the system of spatial information transfer protocol, and compares the major transport layer protocol. Based on OPNET simulation results, this paper validates the extensions of TCP protocol in space link. The research achievements of this paper provide a reference for constructing our own spatial information transmission network.