| 基于矢量水听器的声压和质点振速的空间相关系数 |
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| 引用本文： | 孙贵青, 杨德森, 时胜国. 基于矢量水听器的声压和质点振速的空间相关系数[J]. 声学学报, 2003, 28(6): 509-513. DOI: 10.15949/j.cnki.0371-0025.2003.06.005 |
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| 作者姓名： | 孙贵青 杨德森 时胜国 |
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| 作者单位： | 中国科学院声学研究所，哈尔滨工程大学水声工程系，哈尔滨工程大学水声工程系 北京 100080，哈尔滨 150001，哈尔滨 150001 |
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| 摘 要： | 矢量水听器同步测量声场空间一点处的声压和质点振速的三个正交分量,由此得到的幅度和相位信息有利于改善声呐的检测和估计性能。对三维球形各向同性噪声场中声压和质点振速的时空相关性本文进行了研究,推导了矢量水听器的噪声协方差矩阵的理论表达式;给出了矢量水听器水平线阵和垂直线阵的协方差矩阵;研究单个矢量水听器的噪声协方差矩阵,并给出了浅海近岸水域的试验结果;利用上述理论结果推导了矢量水听器阵列的声能流阵增益。
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| 收稿时间： | 2002-02-21 |
| 修稿时间： | 2002-06-19 |
Spatial correlation coefficients of acoustic pressure and particle velocity based on vector hydrophone |
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| SUN Guiqing, YANG Desen, SHI Shengguo. Spatial correlation coefficients of acoustic pressure and particle velocity based on vector hydrophone[J]. ACTA ACUSTICA, 2003, 28(6): 509-513. DOI: 10.15949/j.cnki.0371-0025.2003.06.005 |
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| Authors: | SUN Guiqing YANG Desen SHI Shengguo |
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| Abstract: | Vector hydrophone measures pressure and all three orthogonal components of particle velocity at a single point in space. Using those obtained amplitude and phase information is very useful for improving detection and estimation of sonar. The spatial correlation between pressure and particle velocity in 3-D spherical isotropic noise field is investigated. Noise covariance matrix is derived; one of horizontal and vertical array is shown, respectively. Noise covariance matrix of a single vector hydrophone is studied with experiment results in the shallow water. Array gain of acoustic energy flux is also derived using above theoretical results. |
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