| 基于驱动响应同步的混沌背景下谐波信号频率估计方法 |
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| 引用本文： | 孙晓东,石要武,康晓涛.基于驱动响应同步的混沌背景下谐波信号频率估计方法[J].长春理工大学学报,2008,31(3). |
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| 作者姓名： | 孙晓东 石要武 康晓涛 |
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| 作者单位： | 吉林大学,通信工程学院,长春,130025;吉林大学,通信工程学院,长春,130025;吉林大学,通信工程学院,长春,130025 |
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| 摘 要： | 提出一种基于混沌驱动响应同步的强混沌背景下谐波频率估计的方法.该方法利用采样的混合信号(混沌加谐波)驱动一新构建的同类响应混沌系统,若响应混沌系统同步于驱动混沌信号,则驱动响应信号的误差序列中应含有谐波成分,对误差序列互谱的分析,估计谐波频率.该方法同时也适于其它噪声加混沌干扰的复合背景下的谐波频率估计.理论分析给出了该方法的适用条件,仿真实验证明该方法简单有效.
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| 关 键 词： | 混沌同步 驱动响应 谐波信号 频率估计 |
A frequency estimation Method for harmonic Signal Submerged in Chaotic background based on chaotic drive-response synchronization |
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| SUN Xiaodong,SHI Yaowu,KANG Xiaotao.A frequency estimation Method for harmonic Signal Submerged in Chaotic background based on chaotic drive-response synchronization[J].Journal of Changchun University of Science and Technology,2008,31(3). |
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| Authors: | SUN Xiaodong SHI Yaowu KANG Xiaotao |
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| Affiliation: | SUN Xiaodong,SHI Yaowu,KANG Xiaotao (College of Communication Engineering,Jilin University,Changchun 130025) |
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| Abstract: | This paper presents a frequency 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 and harmonic signal ) to drive a new response chaotic system which is same with the driving system,when chaotic synchronization occurred,the error data series between drive and response signal have the harmonic signal,using cross spectrum method,it's easy to es-timate the harmonic frequency. The method is... |
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| Keywords: | chaotic synchronization drive-response harmonic signal frequency estimation |
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