小波技术在组合导航系统故障诊断中的应用  

Application of Wavelet Technology in Fault Detection of an Integrated Navigation System

作　　者：沈鹏[1] 徐景硕[1] 高扬[1] 

机构地区：[1]海军航空工程学院青岛分院,山东青岛266001

出　　处：《飞行器测控学报》2008年第3期82-84,共3页Journal of Spacecraft TT&C Technology

摘　　要：针对组合导航系统中存在的故障类型和特点，提出一种新的基于信号处理的故障检测方法。该方法利用小波分析技术对含有故障信息的系统信号进行分析处理，并将此方法应用于SINS／GPS组合导航系统。仿真结果分析表明，小波分析技术能很好地及时检测出组合导航系统的硬故障，且更加简便灵活，从而可以将小波分析技术应用于组合导航系统的故障检测。According to the fault types and characteristics of an integrated navigation system, a new fault detection method based on signal processing is addressed. This new method analyzes and processes the system signal that contains fault information by use of the wavelet technology. It has been applied in the SINS/GPS integrated navigation system. The simulation result shows that the wavelet analysis technology can detect the abrupt fault efficiently, and is more simple and agile. Therefore, the wavelet analysis technology could be used for fault detection of an integrated navigation system.

关 键 词：小波变换 故障检测 组合导航系统 量测信号 

分 类 号：TN967.2[电子电信—信号与信息处理]