| 强混沌干扰中的谐波信号提取 |
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| 引用本文： | 汪芙平,郭静波,王赞基,萧达川,李茂堂.强混沌干扰中的谐波信号提取[J].物理学报,2001,50(6):1019-1023. |
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| 作者姓名： | 汪芙平 郭静波 王赞基 萧达川 李茂堂 |
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| 作者单位： | (1)清华大学电机工程与应用电子技术系,北京100084; (2)中国科学院空间科学中心,北京100080 |
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| 基金项目： | 国家重点基础研究专项经费(批准号:G1998020307)资助的课题. |
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| 摘 要： | 提出一种新的从强混沌干扰中提取被掩蔽的谐波信号的方法.依据混沌吸引子固有的几何性质,借助微分流形切空间的概念,将混沌干扰和谐波信号分别投影到混沌吸引子所在流形的切空间及其补空间,从而成功地将二者分离.理论分析和计算机仿真实验都表明该方法非常有效
关键词：
混沌
非线性
信号处理
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| 关 键 词： | 混沌 非线性 信号处理 |
| 收稿时间： | 6/7/2000 12:00:00 AM |
| 修稿时间： | 2000年6月7日 |
HARMONIC SIGNAL EXTRACTION FROM STRONG CHAOTIC INTERFERENCE |
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| WANG FU-PING,GUO JING-BO,WANG ZAN-JI,XIAO DA-CHUAN and LI MAO-TANG.HARMONIC SIGNAL EXTRACTION FROM STRONG CHAOTIC INTERFERENCE[J].Acta Physica Sinica,2001,50(6):1019-1023. |
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| Authors: | WANG FU-PING GUO JING-BO WANG ZAN-JI XIAO DA-CHUAN and LI MAO-TANG |
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| Abstract: | The problem of signal extraction from received data contaminated with strong chaotic interference has been investigated and a novel approach to this problem is proposed based on the geometry of chaotic interference. According to this approach, chaotic attractor is first reconstructed from the received data, then in the way of projecting chaotic interference and harmonic signals into the local tangent space and its transverse space of the manifold in which the attractor lies, the two signals are successfully separated. Excellent results were achieved from the computer simulation experiments, which verify the effectiveness of the approach. |
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| Keywords: | chaos nonlinear signal processing |
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