Water surface capillary wave detection method based on optical devices

被引：0

作者：

Fang, Erzheng ^{[1
,2
,3
]}

Li, Zongru ^{[3
]}

机构：

[1] National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin,150001, China

[2] Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin,150001, China

[3] College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin,150001, China

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2024年 / 45卷 / 02期

关键词：

Acoustic generators - Magnesium - Morphology - Phase interfaces - Signal detection - Surface waters - Underwater acoustics - Water waves;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Studies of long-range propagation or detection of underwater sound waves mainly focus on scattering, reflection, and transmission loss. Under these conditions, the water surface is often considered rigid such that the tiny capillary waves induced at the water-air interface are often neglected. In this study, water-air interface morphology is analyzed when an underwater far-field acoustic wave reaches the water surface. This water surface wave vibrates at the nano level with the same frequency as the underwater incident sound wave, which decreases exponentially. Moreover, the maximum distance a water surface wave can travel decreases rapidly when its frequency increases. Based on the abovementioned discussion and the working principle of laser detection, a crossmedia underwater target detection system is designed, and a technical solution is provided to suppress interference from the low-frequency noise of ocean waves and reflections. Simulation reveals that this system has good resolution. Moreover, the devices used in this system are concealed, contactless, and easily maintained, having a good effect on the detection of low-frequency sound sources. By combining the advantages of a light wave traveling in air and a sound wave traveling in water, this method can be a new promising means for underwater target detection. © 2024 Editorial Board of Journal of Harbin Engineering. All rights reserved.

引用

页码：332 / 338