摘要
介绍了小波变换原理,将小波变换用于弱信号检测并与传统的傅里叶变换方法进行了比较,仿真结果表明,小波变换能有效提高信噪比。
The principle of the wavelet transform is introduced.The wavelet transform is used to detect the weak signal,and it is compared with the way of Fourier transform.The result of simulation shows that the wavelet transform can improve signal-to-noise ratio effectively.
出处
《机械工程与自动化》
2007年第5期96-97,共2页
Mechanical Engineering & Automation
关键词
小波变换
弱信号检测
信噪比
傅里叶变换
wavelet transform
weak signal detection
signal-to-noise ratio
Foreier transform
