Estimating the Amplitude of Wind Waves by Correlation Analysis of the Reverberation Signal

被引：1

作者：

Salin, B. M. ^{[1
]}

Kemarskaya, O. N. ^{[1
]}

Salin, M. B. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

来源：

ACOUSTICAL PHYSICS | 2019年 / 65卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

low-frequency marine reverberation; backscattering; shelf zones; volume and surface inhomogeneities; wind waves; reverberation parameters; correlation analysis; generalized spectral analysis; BUBBLES;

D O I：

10.1134/S1063771019010093

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Correlation analysis of low-frequency reverberation signals has been carried out by decomposing the reverberation into reference functions, formed as a set of signals reflected from a point scatterer moving along a circular trajectory. The choice of the reference signal is related to the model of sound scattering by inhomogeneities (bubbles) occurring in the near-surface layer and moving together with the orbital currents of wind waves. The study demonstrated that the correlation functions differ significantly (by 5-6 dB) for the region of position and negative Doppler frequencies of reverberation signals. A stable increase has been revealed for the maximum of the correlation function at certain radii of scatterer motion, which are related to the amplitudes of wind waves.

引用

页码：41 / 51

页数：11

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