APPLICATION OF WAVELET TRANSFORM IN LASER DETECTION OF UNDERWATER ACOUSTIC SIGNAL

被引：0

作者：

Zhang, Lie-Shan ^{[1
]}

Zhang, Xiao-Lin ^{[1
]}

Zou, Bin ^{[1
]}

Tang, Wen-Yan ^{[1
]}

机构：

[1] Harbin Inst Technol, Harbin, Peoples R China

来源：

2014 11TH INTERNATIONAL COMPUTER CONFERENCE ON WAVELET ACTIVE MEDIA TECHNOLOGY AND INFORMATION PROCESSING (ICCWAMTIP) | 2014年

关键词：

Wavelet transform; wavelet ridge; underwater acoustic signal; laser interference;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

This article analyses the characteristic of time frequency distribution of laser detection signals of underwater acoustic signal, we discover the regularity of wavelet ridges distribution of laser interference signal: some wavelet ridges distribute on the scale-time curve which is corresponding with the frequency of underwater acoustic signal, or symmetrically distribute in the upper and lower sides. According to this regularity, a method for estimating the instantaneous frequency of underwater acoustic signal using wavelet ridges is put forward. Detection experiments of underwater acoustic signal with stable-frequency and the linear frequency modulation are both carried out using wavelet transform, and the results prove the correctness of this method.

引用

页码：110 / 113

页数：4

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