Journal
SENSORS
Volume 22, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/s22051812
Keywords
backscattering strength; acoustic Doppler current profiler; artificial bubble
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This study estimated the backscattering strength of bubble clusters in a water tank using ADCP and analyzed their temporal variations and duration. The characteristics of population density spectrum level (PDSL) and void fraction (VF) of the artificial bubbles were characterized based on the distribution obtained by PDPA.
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).
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