一种减小Duffing系统可检测断续正弦信号频率范围的方法

doi:10.3969/j.issn.0372-2112.2013.04.018

电子学报 ›› 2013, Vol. 41 ›› Issue (4): 733-738.DOI: 10.3969/j.issn.0372-2112.2013.04.018

一种减小Duffing系统可检测断续正弦信号频率范围的方法

韩建群

渤海大学工学院,辽宁锦州 121013

收稿日期:2011-11-15 修回日期:2012-10-25 出版日期:2013-04-25
- 作者简介:
- 韩建群 男,1968年出生于哈尔滨市,副教授、硕士生导师,主要研究方向为混沌控制与通信. E-mail:hanjianqun@126.com
- 基金资助:
- 国家自然科学基金 (No.51277011); 辽宁省教育厅科学技术研究 (No.L2010005)

A Method of Narrowing Frequency Range of Intermittent Sine Signal Detected by Duffing System

HAN Jian-qun

Institute of Technology, Bohai University, Jinzhou, Liaoning 121013, China

Received:2011-11-15 Revised:2012-10-25 Online:2013-04-25 Published:2013-04-25
- Supported by:
- National Natural Science Foundation of China (No.51277011); Science and Technology Research Program of Education Department of Liaoning Province (No.L2010005)

摘要/Abstract

摘要： 本文针对Duffing混沌系统利用状态变化检测已知断续正弦信号时,正弦信号频率范围较宽的问题,根据Mélnikov方法中的系统参数与待测信号幅度、频率之间的关系,分析证明了增加Duffing系统的阻尼参数提高系统正弦信号检测能力的方法,最后给出了在有、无噪声情况下,调整阻尼参数后Duffing系统对断续正弦信号的检测仿真结果.结果表明本文所提出的方法是有效的.

关键词: Duffing系统, 阻尼, 频率范围, 信号检测

Abstract: The frequency ranges of intermittent sine signals are relatively wide when Duffing chaotic system detects those given signals by utilizing the state changes.According to this problem,a method is analyzed and proved in this paper,which is based on the relation of system's parameters and measured signals' amplitudes and frequencies by the method of Mélnikov,that Duffing system's damping parameters can be increased to improve the ability of detecting sine signals.In addition,simulation results of Duffing system's detecting intermittent sine signals are shown by adjusting damping parameters under noise and noise free condition separately.Simulation results show that the presented method is effective.

Key words: Duffing system, damping, frequency range, signal detection

中图分类号:

TN911.T

韩建群. 一种减小Duffing系统可检测断续正弦信号频率范围的方法[J]. 电子学报, 2013, 41(4): 733-738.

HAN Jian-qun . A Method of Narrowing Frequency Range of Intermittent Sine Signal Detected by Duffing System[J]. Acta Electronica Sinica, 2013, 41(4): 733-738.

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一种减小Duffing系统可检测断续正弦信号频率范围的方法

A Method of Narrowing Frequency Range of Intermittent Sine Signal Detected by Duffing System

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