主星带伴随分布式小卫星SAR系统效能分析

Effectiveness Analysis of Spaceborne Parasitic Distributed SAR System

针对主星带伴随分布式小卫星系统效能分析中几个关键问题进行了研究。首先,根据分布式小卫星SAR 系统的任务需求,给出了系统效能评估指标体系;结合分布式小卫星轨道运行特点,建立了系统能力模型;根据系统的工作状态,建立了系统可靠性Markov模型;基于能力模型与可靠性模型,建立了主星带伴随分布式小卫星SAR 系统效能评估模型。仿真结果证明,以上模型的建立为主星带伴随分布式小卫星SAR系统效能分析以及系统参数设计提供理论依据。

To analyze several key problems about effectiveness analysis of spacebome parasitic SAR system, firstly, an index system of effectiveness assessment is established based on the mission request of distributed SAR system; combined with orbit characteristics of distributed small satellites, the model of system capability is established; based on system working state, Markov model of system reliability is established; based on capability model and reliability model, the model of effectiveness assessment is established. The simulation results indicate the proposed models provide theoretic dependence for effectiveness analysis of spaceborne parasitic distributed SAR system