空间通信设施模型与仿真

由于技术进步，各空间机构广泛的合作以及商用空间领域的开展，使空间任务变得复杂多样。通过以往地面站和卫星跟踪系统已经难以适应今后空间呈现出的由卫星群、空间站、航天飞机以及各类探测传感器网络构成的复杂的通信格局，从而迫切需要建立空间通信基础设施来为空间任务提供通信服务。通过对空间任务通信需求和特点进行分析，结合目前卫星通信技术的现状，提出一种环状层次可扩展的空间通信基础设施构架，并对其进行了分析仿真证明其合理性．

Model and Simulation of Space Communication Infrastructure

The advance of the modern technology, the broad collaboration of space agencies and the development of commercial space area make space missions diversity. It is too difficult for the legacy system which is made up of ground stations and Tracking and Data Relay Satellite system to provide communication service for the coming space communication state which will be composed of satellites flying in fleet, cluster or constellation, space stations, spacecrafts and web of different kinds of sensors. It is urgent to establish space communication infrastructure to provide service to space missions. Based on analyzing the demand and characteristics of space mission communication and combining state-of-art satellite communication technology, an architecture of space communication infrastructure was proposed which is made up of layered communication satellites flying in ring to provide an efficient and scalable communication service for the space missions. And simulation proves its reasonability.