| 浅海目标辐射噪声测量中声聚焦现象引起的误差分析及修正 |
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| 引用本文： | 杨德森,胡鹏涛. 浅海目标辐射噪声测量中声聚焦现象引起的误差分析及修正[J]. 振动与冲击, 2010, 29(1): 62-67. DOI: |
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| 作者姓名： | 杨德森 胡鹏涛 |
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| 作者单位： | 1.哈尔滨工程大学水声技术国防科技重点实验室，哈尔滨，150001；2.海军91388部队，湛江，524022 |
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| 基金项目： | 国防基础科研项目，国家自然科学基金 |
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| 摘 要： | 研究了浅海近距离声聚焦特性及其对目标辐射噪声测量的影响和修正方法。利用基于射线理论的虚源法,建立了典型声源和复合声源的声场计算模型,通过具体算例分析了声聚焦引起的测量误差,将单点测量模型和阵列多点测量模型进行对比,并进行湖上试验验证,结果表明阵列多点测量模型能有效的对信道空间传递函数平滑,为如何减小声聚焦对目标辐射噪声测量的影响提供了依据,有助于实际工程测量的数据分析和测量精度的提高。
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| 关 键 词： | 浅海 声聚焦 噪声测量 虚源法 |
| 收稿时间： | 2009-04-20 |
| 修稿时间： | 2009-06-23 |
Error analysis and correction due to shallow water acoustic focusing in radiated noise measurement |
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| YANG De-sen,HU Peng-tao. Error analysis and correction due to shallow water acoustic focusing in radiated noise measurement[J]. Journal of Vibration and Shock, 2010, 29(1): 62-67. DOI: |
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| Authors: | YANG De-sen HU Peng-tao |
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| Affiliation: | 1.National Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China;2. Navy 91388 Unit of PLA, Zhanjiang 524022, China |
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| Abstract: | Study was conducted on the characteristics of shallow water acoustic focusing within measuring distance, its influence on the radiated noise measurement and the corresponding correction.Based on the image source method in Ray Theory, a calculating model for the acoustic field of typical sound sources and complex sound sources was established.Then, the measurement errors induced by acoustic focusing were analyzed.Comparing the spot measurement model with the multimetering model, through lake testing, the results showed that the array multimetering model can smooth the channel transfer function, it provides a foundation for reducing the influence of acoustic focusing on radiated noise measurement, and helps to analyse data and improve the accuracy of measurement. |
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| Keywords: | shallow water acoustic focusing noise measurement image source method |
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