时序异步传声器阵列测量对机体噪声源进行三维定位的可能性研究

IF 1.2 4区 物理与天体物理 Q4 ACOUSTICS
O. P. Bychkov, M. A. Demyanov
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引用次数: 0

摘要

本文介绍了使用先前开发的基于不同位置的多传声器阵列异步测量数据的声源三维定位方法的结果,该方法适用于机身噪声的偶极子型源特征。本文由两部分组成。首先,通过偶极子源测试定位的实例对所提出的方法进行了验证。考虑了相对于传声器阵列边缘具有不同偶极矩方向的源。基于测试源的定位结果表明,与一般情况相比,平行于源偶极矩的二面体阵列可以更准确地识别三维空间中的偶极源。在第二部分中,利用该方法构建了具有不同振幅和方向的复杂偶极子源结构的小型模拟起落架大升力机翼模型的三维噪声源定位图。通过与测试用例的对比,分析了得到的各频段体积定位图,并说明了在这种情况下定位源的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements

On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements

On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements

The article presents the results of using a previously developed method for three-dimensional localization of acoustic sources based on data from asynchronous measurements with a multimicrophone array from various positions, adapted for dipole-type sources characteristic of airframe noise. The article consists of two parts. In the first, the developed method was verified using the example of localization of test dipole sources. Sources with different orientations of the dipole moment with respect to the edges of the microphone array are considered. Based on the results of localizing test sources, it is shown that a dihedral array, the faces of which are parallel to the dipole moment of the source, allows more accurate identification of a dipole source in three-dimensional space compared to the general case. In the second part, the method is used to construct three-dimensional noise-source localization maps of a small-scale high-lift wing model with imitation of extended landing gear, which has a complex structure of dipole sources with various amplitudes and directions. The obtained volumetric localization maps in various frequency bands were analyzed by comparing such localization with test cases, and the possibility of localizing sources in this case was shown.

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来源期刊
Acoustical Physics
Acoustical Physics 物理-声学
CiteScore
1.60
自引率
50.00%
发文量
58
审稿时长
3.5 months
期刊介绍: Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.
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