一种导航卫星的系统效能建模与分析方法  

A System Effectiveness Modeling and Analysis Method of Single Navigation Satellite

作　　者：杨卓鹏[1] 郑恒[1] 角淑媛[1] 龚佩佩[1] 

机构地区：[1]中国航天标准化与产品保证研究院,北京100071

出　　处：《宇航学报》2017年第6期647-654,共8页Journal of Astronautics

摘　　要：针对导航卫星的轨道机动调控、星地联动运行、可靠性要求高等特点以及整体性能评估问题,提出一种综合考虑各类中断、随机型与耗损型故障、性能等多种因素的系统效能建模与分析方法。该方法采用马尔科夫链构建导航卫星可用性模型;考虑威布尔分布和正态分布构建导航卫星可靠性模型;采用应力—强度算法将性能进行归一化处理;综合可用性、可靠性和性能归一化值开展系统效能建模与分析,使导航卫星系统效能研究由单因素(性能)拓展为多因素(可用性、可靠性和性能)。中轨道(MEO)导航卫星仿真算例表明,该建模与分析方法可为导航卫星设计优化决策提供量化依据,并可拓展应用于通信、气象、遥感等系列卫星,为其研制建设提供重要专业技术支持。Due to the high requirements of orbit control, satellite-station interactive operation, reliability, and performance assessment, a modeling and analysis method of system effectiveness for a navigation satellite is proposed, considering the outages, random and wearout faults as well as performance. The availability of a navigation satellite is confirmed based on the Markov chain, the reliability is analyzed considering the Weibull and Gaussian distribution, and the performance is normalized by the stress strength interference. The system effectiveness is modeled and analyzed by the factors mentioned above. The medium Earth orbit （MEO） simulation results have demonstrated that this method can be applied for design optimization, and be extended to communications, meteorological, remote sensing satellites.

关 键 词：可用性 可靠性 性能 系统效能 

分 类 号：TN967.1[电子电信—信号与信息处理]