小波变换在奇变信号检测中的应用

小波变换在奇变信号检测中的应用 The Application for Singularity Detection of Signals With Wavelet Transform 陈淑珍 1 first-author 石波 1 武汉大学电子信息学学院,武汉,430072 武汉大学电子信息学学院,武汉,430072 College of Electronics Information,Wuhan University College of Electronics Information,Wuhan University 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. 小波变换 多尺度分析 时频分析 局部峰值 突变检测 wavelet transform multi-scale analysis time-frequency analysis loacal peak value singularity detection 10.14188/j.1671-8836.2000.01.031 TN911 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） 2000-01-01 2021-04-01 1