| 微弱舰船声信号的混沌处理方法 |
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| 引用本文： | 周胜,林春生.微弱舰船声信号的混沌处理方法[J].武汉理工大学学报(交通科学与工程版),2009,33(1). |
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| 作者姓名： | 周胜 林春生 |
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| 作者单位： | 1. 海军工程大学兵器工程系,武汉,430033;海军兵种指挥学院,广州,510430
2. 海军工程大学兵器工程系,武汉,430033 |
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| 摘 要： | 针对进出港口的舰船噪声低,难以检测的问题,采用了混沌振子检测理论,将其应用在舰船弱信号检测中,采用参数抑制法,同时设计了微弱信号的混沌检测系统.通过仿真计算,结果表明该系统能有效地提高检测的信噪比.文中还给出了一种简便判断系统是否处在混沌态的方法.
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| 关 键 词： | 混沌 信号检测 线谱 |
Application of Chaos Theory for Weak Signal of Ship Detecting |
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| Zhou Sheng,Lin Chun-sheng.Application of Chaos Theory for Weak Signal of Ship Detecting[J].journal of wuhan university of technology(transportation science&engineering),2009,33(1). |
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| Authors: | Zhou Sheng Lin Chun-sheng |
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| Institution: | Dept.of Weaponry Engineering;Naval Univ.of Engineering;Wuhan 430033;Guangzhou Naval Academy;Guangzhou 510430 |
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| Abstract: | The Duffing oscillator is designed to detect weak signal under strong noise by means of the chaos theory.It is pointed out that Duffing equation expresses amplitude and frequency sensitive property when system transits from chaotic to great periodic motion and that frequency sensitive property fits for extraction of weak frequency variation through simulation.At the same time,simulation model,frame diagram and simulation result are given.The experiment results show this is a time-domain signal processing me... |
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| Keywords: | chaos signal detection line-spectrum |
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