Abstract

As an important infrastructure, space information network is based on platforms such as satellite, balloon and airplanes, it acquires, transfers and processes real-time information and can support ocean going, emergent rescue, navigation and spacecraft tracking, deep space exploration and dynamic, high-rate data transmission. When ground users access the space information network, the channel will be more complicated than those of ordinary space communication or terrestrial wireless communication. In this paper, a system model of ground user accessing the space networks is described. Technical challenges are analyzed and possible approaches are proposed.

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