【作者】 孙晓东； 石要武； 康晓涛；

【Author】 Sun Xiaodong Shi Yaowu Kang Xiaotao (College of communication Engineering,Jilin University Changchun 130025 China)

【机构】 吉林大学通信工程学院；

【摘要】 利用滤波的混沌信号实现混沌同步的现象,提出一种基于混沌同步的强混沌背景下谐波参数估计的方法。该方法利用采样的混合信号(混沌、白噪声、谐波)通过某一类型滤波器,用滤波后信号驱动一新构建的同类响应混沌系统,若响应混沌系统同步与驱动混沌信号,则驱动响应信号的误差序列中应含有谐波成分,从而可估计正弦参数。该方法也适于强混沌信号加较强白噪声为背景的谐波参数估计。更多还原

【Abstract】 Since chaotic filtering the drive signal still synchronization the response system,the paper presents a parameter estimation method for weak harmonic signal embedded in chaotic ’noise’ based on drive-response chaotic synchronization.First of all,we use the mixed signals(chaotic signal,harmonic signal,white noise ) to drive a new response chaotic system,when chaotic synchronization occurred,the error data series between drive and response signal have the harmonic signal,since the SNR in the error data series is much improved,it’s easy to estimate the harmonic parameter.The method is also suit for the situation where background interference signals is mixture of chaotic signal and white noise.更多还原