摘要
根据小波变换的基本概念和理论,给出了实现小波分解与重构的塔式快速算法.基于小波变换用于奇变信号的检测原理,对奇变信号的小波时频分析技术进行了深入的研究.并通过一个工程实例,说明了小波变换在奇变信号检测中具有广阔的应用前景.
The article presents quick method of wavelet decomposing and reconstruction based on basic conception and theroy of wavelet transform. The principle of singularity detection in signals and technique of time-frequency analysis with wavelet transform are introduced in details in this paper. The technique of how to detect the singularity of signals with wavelet transform is also illustrated with a example.
出处
《武汉大学学报(自然科学版)》
CSCD
2000年第1期119-122,共4页
Journal of Wuhan University(Natural Science Edition)
基金
九五国家重点科技攻关项目!(204980340)
武汉市晨光计划科研基金!(204980130)
关键词
小波变换
时频分析
突变检测
信号检测
wavelet transform
multi-scale analysis
time-frequency analysis
loacal peak value
singularity detection