| 水下噪声源的声成像研究 |
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| 引用本文： | 杨德森,谢长生.水下噪声源的声成像研究[J].哈尔滨工程大学学报,1992(3). |
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| 作者姓名： | 杨德森 谢长生 |
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| 作者单位： | 哈尔滨船舶工程学院水声研究所，哈尔滨船舶工程学院水声研究所 |
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| 摘 要： | 水下声成像技术是研究水下声源及其性质的有力工具.本文利用声波互强度的传播规律,通过声场的空间变换获得水下声源的声像.文中利用 FFT 算法计算 Fresnel 积分,并以一个长度和宽度均为2d=23cm 的五元十字阵水下发射系统为例,给出了该系统在水下2m 深时的声像.文中还对声成像过程中声学测量的参数选择做了说明.
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| 关 键 词： | 声成像 噪声源 |
Acoustic Image of Underwater Noise Sources System |
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| Yang Desen Xie Changsheng.Acoustic Image of Underwater Noise Sources System[J].Journal of Harbin Engineering University,1992(3). |
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| Authors: | Yang Desen Xie Changsheng |
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| Affiliation: | Dept.of Underwater Acoustical Eng. |
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| Abstract: | Nearfield acoustic image has been proved to be a useful tool for studying characteris.tics of underwater sound sources.In this paper,an image method is proposed by the aid of the propagation law of mutual intensity and a method for calculating Frcsnel integration by the aid of FFT is also introduced.As an actual instance,the paper shows a sound image of five-element cross array.This array is 2d=23 centimetres in both length and width and is 2 meters deep.Another problem discussed in this paper is how to decide the parameters for getting a clear image in the procedure of underwater acoustic measurements. |
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| Keywords: | acoustic imaging noise source |
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