摘要
小波阈值消噪方法是利用小波变换技术对含噪信号进行分解和重构,通过对小波分解后的小波系数限定阈值来消除噪声的方法。分析小波消噪的算法和实现步骤,并基于MATLAB软件平台编写仿真程序。进行光纤光栅反射信号的小波消噪仿真实验,消噪效果良好。
The method of threshold wavelet-denoise is to use wavelet-transform technique to decompose and reconstruct noise signal, and limit the wavelet-coefficient analyzed to a threshold so as to eliminate the noise. The paper analyzes the algorithm of wavelet-denoise and the step to carry out, and designs the simulate programme based on MATLAB. Simulation experiment has been carded out, in which the flective signal of fiber gratting is processed under the method of wavelet-denoise, and it proved that the effect of de-noising is very good.
出处
《石家庄铁路职业技术学院学报》
2008年第1期63-66,共4页
Journal of Shijiazhuang Institute of Railway Technology
基金
河北省教育厅自然科学项目(Z2006442)
关键词
小波消噪
阈值
分解
重构
光纤光栅
wavelet-denoise
threshold
decompositon
reconstruction
fiber gratting
