| 引用本文: | 戴振宏,孙金祚,隋鹏飞.水下声源引起的水表面横向微波的理论研究.[J].国防科技大学学报,2004,26(1):95-98.[点击复制] |
| DAI Zhenhong,SUN Jinzuo,SUI Pengfei.Theoretical Study on the Water Surface Transversal Mini-wave due to the Underwater Sound Field[J].Journal of National University of Defense Technology,2004,26(1):95-98[点击复制] |
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| 水下声源引起的水表面横向微波的理论研究 |
| 戴振宏1,2, 孙金祚1, 隋鹏飞1 |
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(1.烟台大学 光电信息科学技术学院，山东 烟台 264005;2.清华大学 物理系，北京 100080)
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| 摘要: |
| 利用水下声信号在水表面引起的水表面横向微波振幅很小的条件，将普遍的流体力学方程线性化，推导出在水下点声源的激励下，水表面产生的二维横向微波色散关系以及波的传播形式。结果表明，二维水表面的横向微波具有和一维情况类似的结果，即具有波长短、传播速度小的特点，因而可以对入射到表面的激光束进行调制，为水下声信号检测奠定了理论基础。 |
| 关键词: 声信号 声源 表面横向微波 理想流体 |
| DOI： |
| 投稿日期：2003-06-25 |
| 基金项目:国家部委基金资助项目 |
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| Theoretical Study on the Water Surface Transversal Mini-wave due to the Underwater Sound Field |
| DAI Zhenhong1,2, SUN Jinzuo1, SUI Pengfei1 |
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(1.Institute of Science and Technology for Opto-electronic Information, Yantai University, Yantai 264005，China;2. 2.Department of Physics, Tsinghua University, Beijing 100080，China)
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| Abstract: |
| On the condition of the underwater acoustic signal, the perturbed amplitude would be small, and the general hydrodynamic equation may be linearied. On the basis of this approximation, the horizontal dispersion relation and the form of the water surface are obtained. The results show that the water surface transversal mini-wave has the characteristics of shorter wavelength and lower velocity, therfore it can modulate the light indensity of the incident laser beam on the water surface， which lays the theoretical foundation for the detection of underwater signal. |
| Keywords: acoustic signal sound source surface transversal wave ideal fluid |
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