海洋物理学

浅海爆炸声传播损失及简正波分离实验研究

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  • 南海舰队海洋水文气象中心, 广东 湛江 524001
刘立勇(1982—), 男, 山东省潍坊市人, 助理工程师, 从事海洋水文方面的研究。E-mail: llyswc@163.com

收稿日期: 2009-07-24

  修回日期: 2010-10-22

  网络出版日期: 2011-07-20

Research on transmission loss of explosive sound in shallow water and normal mode extraction

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  • Naval Oceangraphic Hydrometeorological Centre of South China Sea Fleet, Zhanjiang 524001, China

Received date: 2009-07-24

  Revised date: 2010-10-22

  Online published: 2011-07-20

摘要

文章简要介绍了浅海声传播损失的研究背景和基本理论方法。通过 1/3 倍频程滤波对浅海爆炸宽带信号的不同频段在浅海的传播损失情况进行了分析, 描述了浅海环境对声传播损失的影响; 同时在不知道先验信息的条件下, 利用垂直阵声压数据成功地进行了简正波分离, 并与理想条件下Kraken简正波模型计算出的结果进行了比较分析。

本文引用格式

刘立勇,王婷婷 . 浅海爆炸声传播损失及简正波分离实验研究[J]. 热带海洋学报, 2011 , 30(3) : 46 -50 . DOI: 10.11978/j.issn.1009-5470.2011.03.046

Abstract

Abstract: The paper presents research background and basic theory and method of acoustic transmission loss in the shallow water. The effects due to sound transmission loss by shallow water environment are described through analyzing the transmis- sion loss with explosive sound signal at different frequency range filtered by third octave. With no priori knowledge, the nor- mal modes are successfully extracted from the sound pressure data derived from the vertical liner receiver arrays (VLAs). The comparison of normal modes extracted and calculated by Kraken Mode Model is also presented.

参考文献

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[2]       刘伯胜, 雷家煜. 水声学原理[M]. 哈尔滨: 哈尔滨工程大学出版社, 2002: 16-19.

[3]       布列霍夫斯基. 海洋声学[M]. 北京: 海洋出版社, 1985: 146-152.

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[5]       HURSKY P, HODGKISS W S, KUPERMAN W A. Matched field processing with data-derived modes[J]. J Acoust Soc Am, 2000, 109: 1355-1366.

 

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