Analysis of waveguide time-frequency based on Warping transform

被引：6
|
作者：
Lu Li-Cheng [1 ,2 ]
Ma Li [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Acoust, Key Lab Underwater Acoust Environm, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China
来源：
ACTA PHYSICA SINICA | 2015年 / 64卷 / 02期
关键词：
waveguide invariant; Warping transform; frequency dispersion curve; SHALLOW-WATER; RECEIVER; RANGE;
D O I：
10.7498/aps.64.024305
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Sound propagation in underwater will induce dispersion due to the natural sea waveguide, and then it will degrade the results of the signal processing. Based on the waveguide invariant, a general warping transform is presented. This warping transform could extract the waveguide mode dispersion curve and remove the effect of the waveguide dispersion. Results from the simulation and experiment show that the transform woks well.
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页数：6
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