一种导航卫星的系统效能建模与分析方法

发布时间：2019-01-05 04:20

【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。
[Abstract]:In view of the characteristics of maneuvering control of navigation satellites, satellite and earth linkage operation, high reliability requirements and overall performance evaluation, a comprehensive consideration of various types of interruptions, random and wear faults is proposed. System effectiveness modeling and analysis method for performance and other factors. In this method, Markov chain is used to construct navigation satellite availability model, Weibull distribution and normal distribution are considered to construct navigation satellite reliability model, and stress-intensity algorithm is used to normalize the performance. The integrated availability, reliability and performance normalization values are used to model and analyze the system effectiveness, which extends the effectiveness study of navigation satellite systems from single-factor (performance) to multi-factor (availability, reliability and performance). The simulation example of medium-orbit (MEO) navigation satellite shows that the modeling and analysis method can provide the quantitative basis for the optimization decision of navigation satellite design, and can be extended to communication, weather, remote sensing and other series of satellites. To provide important professional technical support for its development and construction.
【作者单位】：中国航天标准化与产品保证研究院;
【分类号】：TN967.1

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