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
收藏
页码：41 / 51
页数：11
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