Chaotic system for the detection of periodic signals under the background of strong noise  

作　　者：LIYue YANGBaojun 

机构地区：[1]DepartmentofInformationEngineering,JilinUniversity,Changchun130012,China [2]DepartmentofGeophysics,JilinUniversity,Changchun130026,China

出　　处：《Chinese Science Bulletin》2003年第5期508-510,共3页

基　　金：the Science and Tech-nology Development Program of Jilin Province (Grant No.20020626)

摘　　要：We propose a method to study the chaotic sys-tem for the detection of periodic signals in the presence ofstrong background noise. The numerical experiments indi-cate that the chaotic system constructed from the modified Duffing-Holmes equation is sensitive to the weak periodic signal mixed with noise, and it has certain immunity to noise. The signal to noise ratio for the system can reach to about 91 dB.We propose a method to study the chaotic sys-tem for the detection of periodic signals in the presence ofstrong background noise. The numerical experiments indi-cate that the chaotic system constructed from the modified Duffing-Holmes equation is sensitive to the weak periodic signal mixed with noise, and it has certain immunity to noise. The signal to noise ratio for the system can reach to about 91 dB.

关 键 词：信号检测 信号处理 混乱系统 弱周期信号 强背景噪声 信噪比 

分 类 号：TN911.7[电子电信—通信与信息系统]