%0 Journal Article
%T REDUCTION OF NOISE IN CHAOTIC SYSTEMS BY WAVELET MULTISCALING DECOMPOSITION ALGORITHM<br>利用小波多尺度分解算法实现混沌系统的噪声减缩
%A HUANG XIAN-GAO
%A XU JIAN-XUE
%A HE DAI-HAI
%A XIA JUN-LI
%A LV ZE-JUN
%A <br>黄显高
%A 徐健学
%A 何岱海
%A 夏军利
%A 吕泽均
%J 物理学报
%D 1999
%I 
%X We apply the wavelet multiscaling decomposition algorithm,which has been developed for noise reduction,to the extraction of periodic signal,noise and other chaotic signal from chaotic back-ground.This algorithm utilizes the characteristic that wavelet transform has an outstanding local fea-ture in time-frequency domains and it is a linear transform.Therefore it can distinguishes signals with different scales.In contrast to the previous methods our method uses the feature of signal scales and dose not demand restrictive assumptions that we must know the mathematical model of the chaotic background and that the amplitude of signal is smaller than that of the chaotic background.The re-sults of computer simulation are given for extracting the sine signal,white noises (distributed uni-formly or in Gaussion shape) and Chua's chaotic signal from Lorenz chaotic back ground.
%K 混沌系统
%K 小波
%K 噪声减缩
%K 多尺度分解
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=FF3D81730AA7C6CB3E36B93CD6B23D64&yid=B914830F5B1D1078&vid=B6DA1AC076E37400&iid=F3090AE9B60B7ED1&sid=A369E079A2D86222&eid=548D1BCB206CDC51&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=0