卫星导航系统故障诊断及容错技术探讨

摘要

针对卫星导航系统由于结构庞大、运行环境复杂,长期在轨运行难免发生元器件故障的问题,研究其故障诊断及容错技术:分析分别基于解析模型、信号处理以及人工智能的故障诊断方法的研究现状及关键性问题,总结主动容错方法和被动容错方法的研究重点和发展趋势,并对未来GNSS故障诊断及容错技术进行展望.%Aiming at the problem that due to the huge structure and complex operation environment,it is vulnerable to fault after long-time on-orbit running for navigation satellite system,the paper studied on the fault diagnosis and fault-tolerance technology of global navigation satellite system(GNSS):the research status and critical issues of fault diagnosis based on ana-lytic model,signal processor and artificial intelligence respectively were analyzed,the research focus and development trend of active fault-tolerance and passive fault-tolerance were summarized,and related technological directions were prospected fur-ther.