| 尾流的噪声信号特性及其模拟研究 |
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| 引用本文： | 杨暄浦,王海燕,白峻.尾流的噪声信号特性及其模拟研究[J].电声技术,2009,33(5):36-39. |
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| 作者姓名： | 杨暄浦 王海燕 白峻 |
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| 作者单位： | 西北工业大学,航海学院,陕西,西安,710072;西北工业大学,航海学院,陕西,西安,710072;西北工业大学,航海学院,陕西,西安,710072 |
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| 摘 要： | 尾流的延伸范围大，其声学特性是进行尾流探测、跟踪和识别的信息宿。在研究尾流的产生机理和物理特性基础上，主要研究了尾流中气泡群的声学特征、由船舶螺旋桨造成的尾流信号的周期性特征。采用AR模型自相关谱估计法研究了模拟产生的船舶尾流信号的谱特征，分析和总结了尾流信号的源特性。建立了的尾流信号时域和频域数学模型，为尾流声学特性的工程应用，提供理论依据。
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| 关 键 词： | 尾流 气泡群 源特性 连续谱 |
Research on Characteristics of Ship Wake Noise and Simulation |
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| YANG Xuan-pu,WANG Hai-yan,BAI Jun.Research on Characteristics of Ship Wake Noise and Simulation[J].Audio Engineering,2009,33(5):36-39. |
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| Authors: | YANG Xuan-pu WANG Hai-yan BAI Jun |
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| Affiliation: | College of Marine Engineering;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | Ship stern wave has wide spread range,and its acoustic characteristics are the information source for ship detecting,tracking and identification.Based on the research on the generation mechanism and the physical characteristics of ship wake flow,the acoustic characteristics of the air bubble group in the wake flow and the periodic characteristics of the wake flow signal caused by the ship propeller are studied.The spectrum characteristics of the simulated ship stern wave are analyzed using AR auto-correlati... |
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| Keywords: | ship wake air bubble group source property continuous spectrum |
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