Performance and influencing factors of acoustic grating based on signal enhancement

Author:

YANG Lei,CHEN Kean,LYU Ning,TIAN Fenghua,ZHANG Jiyang,LIU Yidong

Abstract

In the acoustic signal receiving section of underwater vehicle, an effective measure to improve surface acoustic impedance and reduce signal attenuation is to cover acoustic barrier plate of hydrophone array with high impedance material (signal conditioning plate). Compared with traditional full coverage mode, an acoustic grating (periodic installation of regulator plate array) can greatly improve the received signal gain and reduce the weight of the receiving segment. In order to deeply understand the signal enhancement mechanism and optimize the design of acoustic grating, the factors that influence the signal enhancement performance of acoustic grating from the aspects of width, thickness, incident angle and structure width ratio is studied. Simulation results show that the oblique incidence will change the symmetrical distribution of signal ratio (SR), but will not significantly change the acoustic performance of the structure. Wider and thicker regulating plate lead to stronger non-mirror scattering and better signal enhancement performance of structure. In practical application, geometric parameters of acoustic grating should be reasonably designed to meet multiple constraints of real environment to achieve optimal overall performance. In addition, the moderate width ratio can obtain a good overall acoustic performance.

Publisher

EDP Sciences

Reference13 articles.

1. KO S H, PYO S, SEONG W. Structure-borne and flow noise reductions(mathematical modeling)[M]. Korea: Seoul National University Press, 2001: 34–98

2. SHERMAN C, BUTLER J. Transducers and arrays for underwater sound[M]. New York: Springer, 2007: 289–291

3. ZHANG Yijun. The study of cylindrical array layout technology[D]. Harbin: Harbin Engineering University, 2017: 46–47 (in Chinese)

4. BIAN Hanlin, XIA Tiejian. The study of a cylindrical channel type rubber acoustic baffle[J]. Acoustics and Electronics Engineering, 2014(1): 31–33 [Article] (in Chinese)

5. ZHANG Y, PAN J. Underwater sound scattering and absorption by a coated infinite plate with a distributed inhomogeneity[J]. Journal of the Acoustical Society of America, 2013(133): 2082–2096

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3