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

杨德森;胡鹏涛;

振动与冲击 ›› 2010, Vol. 29 ›› Issue (1) : 62-67.

PDF(2429 KB)
PDF(2429 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (1) : 62-67.
论文

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

  • 杨德森1;胡鹏涛1,2
作者信息 +

Error analysis and correction due to the phenomenon of acoustic focusing in shallow water radiated noise measurement

  • YANG Desen1;HU Pengtao1,2
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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。

Abstract

Researches have been conducted on the characteristics of shallow water acoustic focusing within measuring distance, its influence on the radiated noise measurements and corresponding correction. Based on the image source method in Ray Theory, a calculating model for typical sound sources and complex sound sources of the acoustic field was established. Then deviations in measurements induced by acoustic focusing are analyzed. Through Comparing the spot measurement model with the multimetering model and lake testing, it shows that the array multimetering model can smoothly channel transfer function, which provides foundation for reducing the influence from acoustic focusing on radiated noise measurements and helps to analyse data and improve the accuracy of measurement.

关键词

浅海 / 声聚焦 / 噪声测量 / 虚源法

Key words

shallow water / acoustic focusing / noise measurement / method of image sources

引用本文

导出引用
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
YANG Desen;HU Pengtao;. Error analysis and correction due to the phenomenon of acoustic focusing in shallow water radiated noise measurement[J]. Journal of Vibration and Shock, 2010, 29(1): 62-67
中图分类号: TB535   

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