Research on the Ambient Noise Observation Technology Based on the Underwater Glider

IF 1.7 4区 物理与天体物理
Chao Wang, Meng Yuan
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引用次数: 2

Abstract

The underwater glider is a new type of unpowered, unmanned, moving observational platform with advantages of low-noise level, long operation time, far sustainable range, and high cost-effectiveness. In the paper, based on the underwater glider platform integrated with single vector acoustic sensor, an underwater acoustic glider platform is developed with the ability to detect target direction and observe the ambient noise. The acoustic measurement system and the self-noise of the glider platform under each working condition are tested to analyze the self-noise levels of the acoustic system and the primary noise sources of the platform, and conduct the vibration and noise reduction processing of the platform and optimize the working mode of the acoustic system. The test result shows that the underwater acoustic glider with the optimization has the ability to observe the ambient noise only on the pressure hydrophone channel. With the data sampled from one of the underwater gliders of the sea trial organized in a certain area of the South China Sea in August 2019, authors analyze the variation of spectrum levels of the ambient noise with the depth and the time at the center of seven frequency points (63 Hz, 100 Hz, 200 Hz, 400 Hz, 800 Hz, 1.6 kHz and 3.15 kHz) and discuss the influence of the sailing vessel close to the glider on it. The experimental result shows that the underwater acoustic glider, as an unscrewed moving platform, can be well used to monitor the ambient noise properties over a long term.

水下滑翔机环境噪声观测技术研究
水下滑翔机是一种新型的无动力无人移动观测平台,具有噪声低、运行时间长、持续航程远、成本效益高等优点。本文在集成单矢量声传感器的水下滑翔机平台的基础上,研制了一种具有目标方向检测和环境噪声观测能力的水下滑翔机平台。对滑翔机平台各工况下的声学测量系统和自噪声进行测试,分析声学系统的自噪声等级和平台的主要噪声源,对平台进行减振降噪处理,优化声学系统的工作方式。实验结果表明,优化后的水声滑翔机仅能在压力水听器通道上观察环境噪声。利用2019年8月在南海某海域组织的一艘水下滑翔机的海试数据,分析了7个频率点(63 Hz、100 Hz、200 Hz、400 Hz、800 Hz、1.6 kHz和3.15 kHz)中心的环境噪声频谱电平随深度和时间的变化,并讨论了靠近滑翔机的帆船对其的影响。实验结果表明,水声滑翔机作为一种旋开式移动平台,可以很好地用于环境噪声特性的长期监测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acoustics Australia
Acoustics Australia ACOUSTICS-
自引率
5.90%
发文量
24
期刊介绍: Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.
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