摘要
利用小波方法去噪 ,是小波分析应用于工程实际的一个重要方面。该文介绍了几种常用的小波去噪方法 ,分别是小波分解与重构法、非线性小波变换阈值法、平移不变量法和小波变换模极大值法。将上述几种方法分别用于叠加了高斯白噪声的仿真信号的去噪处理 ,并通过对几种方法优缺点的比较 ,为小波去噪的方法选择提供了一个参考依据。
Using wavelet denoising is an important application of wavelet analysis in engineering.Several popular wavelet denoising methods are introduced herein including the wavelet decomposition and reconstruction method,the nonlinear wavelet threshold denoising method, the translation invariant denoising method and the wavelet transform modulus maxima method.These methods are used to remove the Gaussian white noise from the simulated signal respectively.Their advantages and disadvantages are compared, which may be helpful in selecting the methods of wavelet denoising.
出处
《合肥工业大学学报(自然科学版)》
CAS
CSCD
2002年第2期167-172,共6页
Journal of Hefei University of Technology:Natural Science
基金
国家"8 63"基金资助项目 (2 0 0 1A A42 3 3 0 0 )
安徽省自然科学基金资助项目 (0 0 0 43 3 10 )