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利用声学多普勒海流剖面仪估算人工气泡的反向散射强度。

An Estimation of the Backscattering Strength of Artificial Bubbles Using an Acoustic Doppler Current Profiler.

机构信息

Agency for Defense Development, Changwon 51678, Korea.

出版信息

Sensors (Basel). 2022 Feb 25;22(5):1812. doi: 10.3390/s22051812.

DOI:10.3390/s22051812
PMID:35270959
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8914940/
Abstract

Acoustic Doppler current profilers (ADCPs) were developed to acquire water current velocities, as well as depth-dependent echo intensities. As the backscattering strength of an underwater object can be estimated from the measured echo intensity, the ADCP can be used to estimate plankton populations and distributions. In this study, the backscattering strength of bubble clusters in a water tank was estimated using the commercial ADCP as a proof-of-concept. Specifically, the temporal variations in the backscattering strength and the duration of bubble existence were quantitatively evaluated. Additionally, the PDSL (population density spectrum level) and VF (void fraction) of the artificial bubbles were characterized based on the obtained distribution characteristics using a PDPA (phase Doppler particle analyzer).

摘要

声学多普勒海流剖面仪 (ADCP) 的开发旨在获取水流速度以及与深度相关的回波强度。由于水下物体的反向散射强度可以通过测量的回波强度来估计，因此 ADCP 可用于估计浮游生物的种群和分布。在这项研究中，使用商业 ADCP 来估算水箱中气泡群的反向散射强度，以此来验证这一概念。具体而言，对反向散射强度的时间变化和气泡存在的持续时间进行了定量评估。此外，基于 PDPA（相位多普勒粒子分析仪）获得的分布特征，对人工气泡的 PDSL（种群密度谱级）和 VF（空隙率）进行了表征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2616/8914940/2b6b4da8209c/sensors-22-01812-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2616/8914940/2b6b4da8209c/sensors-22-01812-g008.jpg

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本文引用的文献

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The effect of wind-generated bubbles on sea-surface backscattering at 940 Hz.风生气泡对 940 Hz 海面反向散射的影响。
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