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Deep water acoustic calibration facility: development of a platform

Citation

Malan, J and Marouchos, A and Sherlock, M and Ryan, T and Kloser, R, Deep water acoustic calibration facility: development of a platform, Proceedings of OCEANS 2016, 10-13 April, Shanghai, China, pp. 1-5. ISBN 978-1-4673-9724-7 (2016) [Refereed Conference Paper]

Copyright Statement

Copyright 2016 IEEE

DOI: doi:10.1109/OCEANSAP.2016.7485398

Abstract

Acoustic systems are used widely to provide quantitative estimates of biomass for fisheries and ecosystem assessments. Traditionally, these systems are attached to surface vessels, but increasingly they are being fitted to remote operated vehicles, autonomous vehicles and towed platforms. These platforms allow the acoustic transducer to get closer to targets, and provide increased resolution and, if calibrated, better accuracy of surveys at depth. To achieve better accuracy requires regular and methodical calibration of acoustic transducers at depth using calibration targets of a known acoustic signature. Standard methods exist for calibrating such systems just below the surface, but calibrating such systems at their operating depths is far more difficult. A bespoke system was necessary to allow scientists and technicians to calibrate acoustic transducers at their operating depths to quantify their characteristics and performance. This paper will discuss the design, development and testing of a DEepwater CAlibration Facility (DECAF). The design challenges are presented along with a discussion of difficulties in the operation of such a system.

Item Details

Item Type:Refereed Conference Paper
Keywords:transducers, calibration, acoustic beams, acoustics, sea measurements, ocean temperature
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Special Vehicles
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Technology
Author:Kloser, R (Dr Rudy Kloser)
ID Code:118756
Year Published:2016
Deposited By:Ecology and Biodiversity
Deposited On:2017-07-19
Last Modified:2017-09-14
Downloads:0

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