导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2013年
2期
55-59
,共5页
完好性%组合导航%新息外推法%层次滤波器
完好性%組閤導航%新息外推法%層次濾波器
완호성%조합도항%신식외추법%층차려파기
Integrity%Integrated navigation%Innovation extrapolation method%Filter level configuration
当GPS卫星存在故障时,必须在故障污染系统之前将其检测并隔离,因此完好性是SINS/GPS组合系统的一个重要性能指标.针对SINS/GPS紧耦合系统,利用新息外推法和层次滤波器结构,分别实现卫星故障的快速检测和隔离.通过与新息检测法进行对比仿真表明,新息外推法比新息检测法能更快地检测慢变故障,但对阶跃故障检测的灵敏度没有新息检测法高,最后采用层次滤波器结构实现故障隔离.
噹GPS衛星存在故障時,必鬚在故障汙染繫統之前將其檢測併隔離,因此完好性是SINS/GPS組閤繫統的一箇重要性能指標.針對SINS/GPS緊耦閤繫統,利用新息外推法和層次濾波器結構,分彆實現衛星故障的快速檢測和隔離.通過與新息檢測法進行對比倣真錶明,新息外推法比新息檢測法能更快地檢測慢變故障,但對階躍故障檢測的靈敏度沒有新息檢測法高,最後採用層次濾波器結構實現故障隔離.
당GPS위성존재고장시,필수재고장오염계통지전장기검측병격리,인차완호성시SINS/GPS조합계통적일개중요성능지표.침대SINS/GPS긴우합계통,이용신식외추법화층차려파기결구,분별실현위성고장적쾌속검측화격리.통과여신식검측법진행대비방진표명,신식외추법비신식검측법능경쾌지검측만변고장,단대계약고장검측적령민도몰유신식검측법고,최후채용층차려파기결구실현고장격리.
GPS satellite failure must be detected and isolated before they influence the integrated system. Integrity is a critical performance index of SINS/GPS integrated navigation system. For SINS/GPS tightly integrated navigation system, rapid detection and isolation of satellite failure are realized respectively with innovation extrapolation method and filter level configuration. Compared to innovation detection method, the simulation results show that the innovation extrapolation method can detect slowly growing errors (SGEs) more quickly, but with lower detecting sensitive to step failure. Finally tfailure isolating was realized by filter level configuration.
