Holographic Method for Localization of a Moving Underwater Sound Source in the Presence of Intense Internal Waves

Q4 Materials Science

Radioelektronika, Nanosistemy, Informacionnye Tehnologii Pub Date : 2023-09-28 DOI:10.17725/rensit.2023.15.317

Venedikt M. Kuz'kin, Sergey A. Pereselkov, Vladimir I. Grachev, Sergey A. Tkachenko, Nikolay V. Ladykin, Mikhail V. Kutsov

引用次数: 0

Abstract

Within the framework of a numerical experiment, the holographic processing of noise emission from a moving underwater sound source in the presence of intense internal waves, which cause horizontal refraction of sound field waves, is considered. The interference of the undisturbed and disturbed fields forms a moiré interference pattern (interferogram) that masks the interferogram of a noise source. Registration of a moiré interferogram using a two-dimensional Fourier transform makes it possible to separate the spectral densities of the unperturbed and perturbed fields. This makes it possible to reconstruct the interferogram of the unperturbed field in the presence of intense internal waves. The relative error of its reconstruction is estimated. The errors in reconstructing the range and radial velocity of the source due to horizontal refraction are analyzed.

查看原文本刊更多论文

强烈内波存在下运动声源的全息定位方法

在数值实验的框架内，考虑了运动水下声源在强内波存在下噪声发射的全息处理，这种内波引起声场波的水平折射。未受干扰场和受干扰场的干涉形成了一种干扰图(干涉图)，它掩盖了噪声源的干涉图。利用二维傅里叶变换对干涉图进行配准，使得分离无扰动场和扰动场的谱密度成为可能。这使得在强内波存在的情况下重建无扰动场的干涉图成为可能。对其重建的相对误差进行了估计。分析了由于水平折射导致的震源距离和径向速度重建误差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Radioelektronika, Nanosistemy, Informacionnye Tehnologii Materials Science-Materials Science (miscellaneous)

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： Journal “Radioelectronics. Nanosystems. Information Technologies” (abbr RENSIT) publishes original articles, reviews and brief reports, not previously published, on topical problems in radioelectronics (including biomedical) and fundamentals of information, nano- and biotechnologies and adjacent areas of physics and mathematics. The authors of the journal are academicians, corresponding members and foreign members of the Russian Academy of Natural Sciences (RANS) and their colleagues, as well as other russian and foreign authors on the proposal of the members of RANS, which can be obtained by the author before sending articles to the editor or after its arrival on the recommendation of a member of the editorial board or another member of the RANS, who gave the opinion on the article at the request of the editior. The editors will accept articles in both Russian and English languages. Articles are internally peer reviewed (double-blind peer review) by members of the Editorial Board. Some articles undergo external review, if necessary. Designed for researchers, graduate students, physics students of senior courses and teachers. It turns out 2 times a year (that includes 2 rooms)