交叉相关场特性分析及其在深水水源定位中的潜在应用

Q1 Mathematics

Journal of Computational Acoustics Pub Date : 2017-06-01 DOI:10.1142/S0218396X17500011

Kunde Yang, Hui Li, Rui Duan, Qiulong Yang

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引用次数: 15

摘要

本文分析了部署在底部附近的单个水听器在两个不同范围内接收到的互相关宽带场的干扰特性。射线理论用于推导干涉图样，干涉图样是两种干涉现象的组合。一种干扰周期包含径向源速度的信息，另一种与源深度有关。当数据中明显存在接近点（CPA）时，可以通过计算交叉相关宽带场的傅立叶变换来估计震源运动参数，包括接近点的范围和时间、恒定震源速度和震源深度。如果CPA不明显，则只能提供径向源速度和表面与水下源的区别。请注意，所提出的方法是一种宽带技术。实验结果证实了这种单水听器径向震源速度和震源深度的估计方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis on the Characteristic of Cross-Correlated Field and Its Potential Application on Source Localization in Deep Water

The interference characteristics of cross-correlated broadband fields received by a single hydrophone deployed near the bottom at two different ranges are analyzed in this paper. The ray theory is used to derive the interference pattern, which is a combination of two kinds of interference phenomena. One kind of interference period contains the information of radial source velocity, and the other one is related to source depth. The source motion parameters, including the range and time of closet point of approach (CPA), constant source velocity and source depth, can be estimated by computing the Fourier transform of cross-correlated broadband fields when the existence of a CPA is apparent in the data. If the CPA is not evident, only the radial source velocity and the discrimination of surface versus submerged source can be provided. Note that the proposed method is a broadband technique. Experimental results confirm this single hydrophone estimation method of radial source velocity and source depth.

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来源期刊

Journal of Computational Acoustics 物理-声学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Currently known as Journal of Theoretical and Computational Acoustics (JTCA).The aim of this journal is to provide an international forum for the dissemination of the state-of-the-art information in the field of Computational Acoustics. Topics covered by this journal include research and tutorial contributions in OCEAN ACOUSTICS (a subject of active research in relation with sonar detection and the design of noiseless ships), SEISMO-ACOUSTICS (of concern to earthquake science and engineering, and also to those doing underground prospection like searching for petroleum), AEROACOUSTICS (which includes the analysis of noise created by aircraft), COMPUTATIONAL METHODS, and SUPERCOMPUTING. In addition to the traditional issues and problems in computational methods, the journal also considers theoretical research acoustics papers which lead to large-scale scientific computations. The journal strives to be flexible in the type of high quality papers it publishes and their format. Equally desirable are Full papers, which should be complete and relatively self-contained original contributions with an introduction that can be understood by the broad computational acoustics community. Both rigorous and heuristic styles are acceptable. Of particular interest are papers about new areas of research in which other than strictly computational arguments may be important in establishing a basis for further developments. Tutorial review papers, covering some of the important issues in Computational Mathematical Methods, Scientific Computing, and their applications. Short notes, which present specific new results and techniques in a brief communication. The journal will occasionally publish significant contributions which are larger than the usual format for regular papers. Special issues which report results of high quality workshops in related areas and monographs of significant contributions in the Series of Computational Acoustics will also be published.