摘要
为提高多传感器组合导航系统对各导航传感器的在线故障检测能力 ,在分析调频高斯小波特性的基础上 ,提出了一种基于调频高斯小波变换的导航传感器故障诊断算法 .该算法仅利用传感器的观测量来直接诊断传感器工作是否正常 .它可以对方差突变等软故障进行有效的在线检测 .
In order to improve the online fault-detecting capability of multi-sensor integrated navigation system, a MGWT-based fault diagnosis algorithm for navigation sensors was presented based on analysis of characteristics of modulated Gaussian wavelet (MGW). With this method, the effectiveness of each sensor can be directly detected by using the observing variables of the sensors. Some soft faults (such as the anomaly of covariance) can be detected online. Simulation result proved the effectiveness of this method.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2002年第4期477-480,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
航天科技创新基金资助项目
国家部委基金资助项目
关键词
调频高斯小波变换
导航传感器
故障诊断
组合导航
算法
combinated navigation
fault diagnosis
algorithms
modulated Gaussian wavelet transformation (MGWT)
