浅海Scholte波的频散特性研究

doi:10.3969/j.issn.1000-1093.2018.09.016

兵工学报 ›› 2018, Vol. 39 ›› Issue (9): 1786-1794.doi: 10.3969/j.issn.1000-1093.2018.09.016

浅海Scholte波的频散特性研究

罗夏云¹，程广利¹，张明敏¹, 刘雁春²

(1.海军工程大学电子工程学院, 湖北武汉 430033； 2.海军工程大学导航工程系, 湖北武汉 430033）

收稿日期:2018-01-02 修回日期:2018-01-02 上线日期:2018-10-25
作者简介:罗夏云（1991—）,男,博士研究生。E-mail:luoxy_1991@163.com
基金资助:
国家自然科学基金项目（41576105）

Research on Dispersion Characteristics of Scholte Wave in Shallow Sea

LUO Xia-yun¹, CHENG Guang-li¹, ZHANG Ming-min¹, LIU Yan-chun²

(1.Electronics Engineering College, Naval University of Engineering, Wuhan 430033, Hubei, China;2.Department of Navigation Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China)

Received:2018-01-02 Revised:2018-01-02 Online:2018-10-25

摘要/Abstract

摘要： 为了研究Scholte波在浅海传播过程中的频散特性，基于海底半无限空间模型推导了Scholte波特征方程，对两种典型弹性固态海底条件下Scholte波的频散特性进行仿真计算。利用小波变换对试验数据进行时频分析，确定了Scholte波能量集中的频段。采用滑动窗分析法研究Scholte波的频散特性。对湖上试验数据分析发现，Scholte波能量主要集中在5~15 Hz，其中在5~10 Hz存在明显的频散现象。结果表明：湖上试验分析与理论仿真结果的频散规律一致，滑动窗分析法可用于分析Scholte波的频散特性。

关键词: Scholte波, 频散特性, 滑动窗分析, 相速度

Abstract: In order to study the dispersion characteristics of Scholte wave propagation in shallow sea, the characteristic equation of Scholte wave is deduced based on the seabed semi-infinite space model. The dispersion characteristics of Scholte wave under the condition of several kinds of typical elastic solid seabed are simulated. The frequency band of Scholte wave energy concentration is found by using the wavelet transform method to analyze the experimental data. The dispersion characteristics of Scholte wave are studied by using moving window analysis method. From the analysis of experimental data it is found that the energy of Scholte wave is mainly concentrated in 5-15 Hz, and there is obvious dispersion phenomenon in 5-10 Hz. The results show that the expermental results of the lake are consistent with the theoretically simulated results in the law of dispersion, and the moving window analysis method can be used to analyze the dispersion characteristics of Scholte wave. Key

Key words: Scholtewave, dispersioncharacteristic, movingwindowanalysis, phasevelocity

中图分类号:

罗夏云，程广利，张明敏, 刘雁春. 浅海Scholte波的频散特性研究[J]. 兵工学报, 2018, 39(9): 1786-1794.

LUO Xia-yun, CHENG Guang-li, ZHANG Ming-min, LIU Yan-chun. Research on Dispersion Characteristics of Scholte Wave in Shallow Sea[J]. Acta Armamentarii, 2018, 39(9): 1786-1794.

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第39卷
第9期2018 年9月兵工学报ACTA
ARMAMENTARIIVol.39No.9Sep.2018

浅海Scholte波的频散特性研究

Research on Dispersion Characteristics of Scholte Wave in Shallow Sea

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