基于小波变换的卫星故障诊断方法  

Method of satellite fault diagnosis based on wavelet transform

作　　者：陆文高[1] 苏振华[1] 齐晶[2] 王潇[1] Lu Wengao;Su Zhenhua;Qi Jing;Wang Xiao(DFH Satellite Co., Ltd., Beijing 100094, China;CAST, Beijing 100094, China)

机构地区：[1]航天东方红卫星有限公司,北京100094 [2]中国空间技术研究院,北京100094

出　　处：《国外电子测量技术》2018年第2期30-33,共4页Foreign Electronic Measurement Technology

摘　　要：为了对大量卫星遥测数据进行判读,进而实时诊断卫星故障,研究了基于小波变换的卫星故障诊断方法。该方法根据小波变换的多分辨率分析的特点,采用db4基本小波对遥测数据进行4层小波分解。通过对高频的小波系数重构的信号进行分析,实现遥测数据的在线实时判读,并对该方法的正确性和故障诊断效率进行验证,利用该方法对卫星测试过程中实际测试数据的相关遥测数据进行分析。实验结果部分证实,基于小波变换的卫星故障诊断方法是一种行之有效的方法。In order to effectively use of the massive remote sensing data transmitted from satellites,in the process of testing for satellite real-time fault diagnosis,a method of satellite fault diagnosis based on wavelet transform is proposed.The method is based on the characteristics of multi-resolution analysis of wavelet transform,four layers wavelet decompose of the remote sensing data by the basic db4 wavelet.By analysis of the signal of the high frequency wavelet coefficients reconstruction,the real-time online diagnosis can be carried on to the remote sensing data.To verify the validity and superiority of satellite fault diagnosis method based on wavelet transform,the method is used to analyze remote sensing data.The experimental results show that the method can diagnose the fault of satellite effectively.

关 键 词：卫星 小波变换 故障诊断 

分 类 号：V441[航空宇航科学与技术—飞行器设计]