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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2001年第8期758-763,共6页
Journal of Electronics & Information Technology
关键词
解调
小波分析
信号调制
Engineering diagnosis, Demodulation, Wavelet analyses
