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
收藏
页码：110 / 113
页数：4
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