| 成组光纤水听器特性研究 |
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| 引用本文： | 彭博栋,罗洪,倪明.成组光纤水听器特性研究[J].声学技术,2008,27(3):459-463. |
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| 作者姓名： | 彭博栋 罗洪 倪明 |
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| 作者单位： | 1. 国防科学技术大学光电科学与工程学院,长沙,410073;西北核技术研究所,西安,710024
2. 国防科学技术大学光电科学与工程学院,长沙,410073 |
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| 摘 要： | 成组光纤水听器具有能抑制流噪声、有指向性、灵敏度高等优点,可应用于全光拖曳阵.介绍了成组光纤水听器的概念,建立了其拾取水声信号的水声信号检测模型,理论分析了其灵敏度和指向性.完成了四子单元的芯轴型成组光纤水听器的光学设计和机械设计.在非消声水池中,采用脉冲法测定了其灵敏度和指向性.结果显示:此结构的成组光纤水听器灵敏度为-152dB(0dB=1rad/Pa),与理论值-151dB基本符合;当时,指向性函数主瓣宽度为28°,与理论值26°度基本吻合.
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| 关 键 词： | 成组光纤水听器 灵敏度 指向性 光纤水听器 特性 研究 hydrophone optic fiber extended characteristics 主瓣宽度 函数 理论值 结构 显示 结果 测定 脉冲法 消声水池 机械设计 光学设计 轴型 子单元 |
| 收稿时间： | 2007/10/19 0:00:00 |
| 修稿时间： | 2008/1/15 0:00:00 |
A study of the characteristics of extended optic fiber hydrophone |
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| PENG Bo-dong,LUO Hong and NI Ming.A study of the characteristics of extended optic fiber hydrophone[J].Technical Acoustics,2008,27(3):459-463. |
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| Authors: | PENG Bo-dong LUO Hong and NI Ming |
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| Affiliation: | College of Science and Engineering of Photoelectricity, National University of Defense Technology, Changsha 410073;Northwest Institute of Nuclear Technology, Xi''an 710024, China;College of Science and Engineering of Photoelectricity, National University of Defense Technology, Changsha 410073;College of Science and Engineering of Photoelectricity, National University of Defense Technology, Changsha 410073 |
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| Abstract: | The extended optic fiber hydrophone,which can eliminate the weak correlated flow noise and has directivity and high sensitivity, is suitable for all optic towed arrays. The concept of the extended optic fiber hydrophone is introduced and the model of underwater sound singal detection is developed. The sensitivity and directivity are analyzed theoretically. The design of optic and mechanical configuration of an extended optic fiber hydrophone, which has four same elements, is achieved. The sensitivity and directivity is measured in a basin by the impulse method and the measured sensitivity value is -152dB and the main lobe width of the directivity function measured is 28 degree which axe both agreed with the theoretical values(-151dB and 26 degree). |
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| Keywords: | extended fiber optic hydrophone sensitivity directivity |
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