[1]陈晟,孙海信,文洪涛.声学浮标流噪声谱和空间相关特性分析[J].应用科技,2018,45(02):17-22.[doi:10.11991/yykj.201705004]
 CHEN Sheng,SUN Haixin,WEN Hongtao.Property analysis on flow noise spectrum of acoustic buoy and space correlation[J].Applied science and technology,2018,45(02):17-22.[doi:10.11991/yykj.201705004]
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声学浮标流噪声谱和空间相关特性分析(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第45卷
期数:
2018年02期
页码:
17-22
栏目:
船舶与海洋工程
出版日期:
2018-03-15

文章信息/Info

Title:
Property analysis on flow noise spectrum of acoustic buoy and space correlation
作者:
陈晟1 孙海信2 文洪涛1
1. 国家海洋局第三海洋研究所, 福建 厦门 361005;
2. 厦门大学 信息科学与技术学院 水声通信与海洋信息技术教育部重点实验室, 福建 厦门 361005
Author(s):
CHEN Sheng1 SUN Haixin2 WEN Hongtao1
1. Third Institute, Oceanograph of the State Oceanic Administration, Xiamen 361005, China;
2. Key Laboratory of Underwater Acoustic Communication and Marine Information Technology, Ministry of Education, School of Information Science and Technology, Xiamen University, Xiamen 361005, China
关键词:
声学浮标流噪声水听器声压空间相关噪声谱模型相关半径
Keywords:
acoustic buoyflow-induced noisehydrophonesound pressurespace correlationnoise spectrummodelcorrelation radius
分类号:
TB56
DOI:
10.11991/yykj.201705004
文献标志码:
A
摘要:
为了克服声学浮标在海洋环境中工作时的流噪声干扰,提高接收信号信噪比和记录数据质量,分析流噪声的成因,建立声学浮标流噪声谱理论模型。并应用模型仿真计算声学浮标水听器接收流噪声功率谱和空间相关半径,通过分析水听器接收流噪声功率谱特性和相关关系,得出声学浮标流噪声与海浪的大小有关,随着各水听器垂直速度增大而增大;同时,声学浮标流噪声的空间相关半径与水听器的长度有关,当水听器的长度为0.1 m时,流噪声频率150 Hz的空间相关半径约为10 cm。通过海上实验测试数据与模型仿真的性能一致性分析,验证了声学浮标流噪声功率谱理论模型和相关分析的正确性。
Abstract:
In order to overcome the disturbance of flow-induced noise, improve the signal to noise ratio of the received signal and the quality of the recorded data, analyze the cause of the flow-induced noise, a theoretical model of flow-induced noise spectrum on the acoustic buoy was established. In addition, the model was applied to calculate power spectrum and space correlation radius of flow-induced noise, which was received by the acoustic buoy hydrophones. By analyzing the properties of the power spectrum and the correlation, it was found that the flow-induced noise is correlated to the size of wave and increases following the increase of the vertical velocity of hydrophone; in addition, the space correlation radius of flow-induced noise of acoustic buoy is related to the length of the hydrophone. When the length of the hydrophone is 0.10 meter, the space correlation radius of the flow-induced noise with f=150 Hz is about 10 cm. By analyzing the unanimity between marine experimental data and the simulative performance of model, the correctness of the theoretical model on the power spectrum of flow noise of acoustic buoy and the relevant analysis were verified.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-05-05。
基金项目:国家海洋局第三海洋研究所基本科研业务专项基金项目(海三科2015026);国家自然科学基金项目(61471394,61471309)
作者简介:陈晟(1972-),女,工程师
通讯作者:陈晟,E-mail:sheng_c@tio.org.cn
更新日期/Last Update: 2018-04-09