基于小波分析的工程信号调制解调方法及其应用  

DEMODULATING METHODS BASED ON WAVELET ANALYSIS AND THEIR APPLICATION TO ENGINEERING SIGNALS

作　　者：樊可清[1] 王玲[2] 陈保平[3] 

机构地区：[1]五邑大学智能技术与系统研究所,广东江门529000 [2]五邑大学机电工程系,广东江门529000 [3]石家庄铁道学院计算机系,石家庄050043

出　　处：《电子与信息学报》2001年第8期758-763,共6页Journal of Electronics & Information Technology

摘　　要：该文从工程应用角度出发,以信号渐进性为基础分析了Hilbert变换解调、小波变换多尺度解调和小波脊提取等3种信号解调方法的实用算法、应用特点和局限性。文中通过一个结构振动分析的工程应用实例,讨论了利用渐进小波分析方法同时获取信号调幅、调频信息的解调方法的优越性及其应用问题。This paper, taking a view of engineering application and based on the asymp-lotics of signals, analyses practical algorithms and features and limitations in practice of three signal demodulation methods: Hilbert transform method, wavelet based multi-scales method, and asymptotic wavelet ridge extraction method. The advantage and practice problem of the asymptotic wavelet analysis approach, in obtaining the amplitude and frequency modulating information simultaneously, are illustrated with an authentic example of structure vibration analysis.

关 键 词：解调 小波分析 信号调制 

分 类 号：TN911.3[电子电信—通信与信息系统]