| 浅海环境噪声垂直相关提取海底反射参数 |
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| 引用本文： | 殷宝友,尚尔昌,马力,林建恒.浅海环境噪声垂直相关提取海底反射参数[J].中国科学:物理学 力学 天文学,2011(6):741-748. |
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| 作者姓名： | 殷宝友 尚尔昌 马力 林建恒 |
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| 作者单位： | 中国科学院水声环境特性重点实验室;中国科学院声学研究所北海研究站; |
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| 基金项目： | 国家自然科学基金资助项目(批准号:10774156,10974219) |
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| 摘 要： | 分析小掠射角海底反射特性与浅海环境噪声场垂直相关的关系,从而提取表征海底反射的参数.对某海域浅水区观测的海洋环境噪声数据进行垂直相关特性研究,并用于反演海底参数.鉴于海底参数之间存在耦合,采用分步反演的方法:首先利用曲线拟合或经验公式的方法获取海底反射相位,然后再反演海底反射幅度,最后将反演结果用于同海区的爆炸声声场预报,预报结果和试验测量相比,相对误差均小于10%.根据本文建立的噪声场垂直相关模型提取小掠射角海底反射参数,不需要限定特定的海底模型,反射损失中还包括界面散射的影响,可以有效地预报声场.
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| 关 键 词： | 浅海环境噪声 垂直相关 海底反射 反演 声场预报 |
Extracting bottom reflection parameters from the vertical correlation of ambient noise in shallow water |
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| YIN BaoYou,SHANG ErChang,MA Li & LIN JianHeng Key Laboratory of Underwater Acoustic Environment.Extracting bottom reflection parameters from the vertical correlation of ambient noise in shallow water[J].Scientia Sinica Pysica,Mechanica & Astronomica,2011(6):741-748. |
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| Authors: | YIN BaoYou SHANG ErChang MA Li & LIN JianHeng Key Laboratory of Underwater Acoustic Environment |
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| Institution: | YIN BaoYou1*,SHANG ErChang1,MA Li1 & LIN JianHeng2 1 Key Laboratory of Underwater Acoustic Environment,Institute of Acoustics,Chinese Academy of Sciences,Beijing,100190 China,2 Qingdao Laboratory,Qingdao 266023,China |
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| Abstract: | A method is introduced to extract reflection characteristics at smaller angles from the vertical correlation of surface-generated noise in shallow water, since the relationship of the two is analyzed. By presenting the vertical correlations of the ambient noise data measured in one experiment in China, the geo-acoustics parameters are estimated. It is shown that these parameters are mutual coupled, therefore a segmentation inversion algorithm has been developed. The reflection phase shift is obtained accord... |
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| Keywords: | ocean ambient noise vertical correlation bottom reflection inversion acoustical prediction |
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