基于 UWFBG 的 1.7 毫米直径拖曳式水听器阵列的测向研究

IF 3.4 3区综合性期刊 Q2 CHEMISTRY, ANALYTICAL Sensors Pub Date : 2024-07-02 DOI:10.3390/s24134300

Su Wu, Junbin Huang, Yandong Pang, Jiabei Wang, Hongcan Gu

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引用次数: 0

摘要

本文研究了用于声学测向的直径为 1.7 毫米的超弱光纤布拉格光栅（UWFBG）水听器牵引阵列光缆。推导了这种集成涂层敏化光缆接收水下声波的机理，并证明其响应振幅随声波方向而变化。为了测试这种水听器阵列的性能，我们进行了一次消声水池实验。测试阵列由六根传感光纤组成，每根光纤都盘绕成直径为 9 厘米的光纤环，悬浮在水中接收声波信号。在 2.5 kHz 至 6.3 kHz 频率范围内，平均灵敏度达到 -141.2 dB re rad/μPa，验证了对水下声波方位角的探测。该超薄拖缆系统具有自由结构、高灵敏度和水下目标探测能力，在未来的无人潜航器（UUV）应用中展现出巨大潜力。

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Direction-Finding Study of a 1.7 mm Diameter Towed Hydrophone Array Based on UWFBG

This paper investigates a 1.7 mm diameter ultra-weak fiber Bragg grating (UWFBG) hydrophone towed array cable for acoustic direction finding. The mechanism of the underwater acoustic waves received by this integrated-coating sensitizing optical cable is deduced, and it is shown that the amplitude of its response varies with the direction of the sound wave. An anechoic pool experiment is carried out to test the performance of such a hydrophone array. The test array is a selection of six sensing fibers, each of which is coiled into 9 cm diameter fiber ring suspended in the water to receive acoustic signals. An average sensitivity of −141.2 dB re rad/μPa at frequencies from 2.5 kHz to 6.3 kHz was achieved, validating the detection of the azimuth of underwater acoustic waves. The ultra-thin towing cable system, with free structure, high sensitivity, and underwater target-detection capability has demonstrated great potential for future unmanned underwater vehicle (UUV) applications.

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来源期刊

Sensors 工程技术-电化学

CiteScore

7.30

自引率

12.80%

发文量

8430

审稿时长

1.7 months

期刊介绍： Sensors (ISSN 1424-8220) provides an advanced forum for the science and technology of sensors and biosensors. It publishes reviews (including comprehensive reviews on the complete sensors products), regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.