| 一种配置混沌振子的光纤水听器 |
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| 引用本文： | 孟克,刘鹏,陈辉,任海刚. 一种配置混沌振子的光纤水听器[J]. 哈尔滨工程大学学报, 2007, 28(3): 335-338 |
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| 作者姓名： | 孟克 刘鹏 陈辉 任海刚 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 在海洋中，海水的流动噪声很大，水听器接收到的被测船体的信号往往是信噪比很低的微弱信号．一般的时域检测系统，可检测的信号的最低信噪比门限难以达到-20dB，并且检测时间较长．介绍一种配置混沌振子的光纤水听器系统，利用混沌振子对被测周期小信号的敏感性和对噪声的免疫力，获取水声信号．与时域检测方法（如多点采样积分方法）相比较，具有更低的最低信噪比门限，和更短的测试时间．
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| 关 键 词： | 水听器 光纤传感器 混沌 |
| 文章编号： | 1006-7043(2007)03-0335-04 |
| 修稿时间： | 2005-11-02 |
A fiber optic hydrophone with chaos |
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| MENG Ke,LIU Peng,CHEN Hui,REN Hai-gang. A fiber optic hydrophone with chaos[J]. Journal of Harbin Engineering University, 2007, 28(3): 335-338 |
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| Authors: | MENG Ke LIU Peng CHEN Hui REN Hai-gang |
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| Abstract: | At sea,the water flowing noise is strong,so the received ship signal by a hydrophone is often weak,i.e.its signal-noise ratio is low.Generally, for a measurement system working in time domain,its lowest signal-noise threshold cannot be lowed down to-20dB.And the measurement costs much time.A fiberoptic hydrophone matched with chaos is introduced.Its sensitivity to weak cycle signal and resistance to noise are used to detect hydro-sound signal.In comparison with traditional measurement method in time domain(e.g.sampling and averaging method),it has lower signal-noise threshold,as well as shorter measurement time. |
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| Keywords: | hydrophone fiber-optic sensor chaos |
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