摘要
通过对信号与噪声在经过小波变换后的不同特点的分析,讨论了一种对含噪信号进行噪声消除的方法。该方法与传统的低通滤波器相比,在改善信噪比的同时,还保持了很好的时间分辨率。最后通过仿真实验,证明了该方法的有效性。
Having analyzed the differences between signal and noise after they are wavelet-transformed,the paper discusses a noise eliminating method which is good for signal in noise.compared with the traditional lowopass filter,the proposed method not only raises the signal-to-noise ratio but also keeps high time resolution.Simulation has proved the effectiveness of the method.
出处
《武汉科技大学学报》
CAS
2004年第3期286-288,共3页
Journal of Wuhan University of Science and Technology
关键词
小波变换
信号去噪
信噪比
时频分析
wavelet transform
time-frequency analysis
signal denoise
