A miniature acoustic device for tracking small marine animals or submerged drifters

A miniature acoustic device for tracking small marine animals or submerged drifters AbstractThis paper presents an acoustic archival tag capable of tracking small marine animals. It is also a technology that can be ported to other platforms such as next generation acoustic and Argo floats as well as gliders. Tracking is achieved by standard RAFOS triangulation using the arrival times of unique sound signals emitted by moored sources. At the core of the tag is a custom microchip, which controls all system operations. It incorporates the critical acoustic arrival time detector, a thermal sensor and a pressure sensor interface. All electronic components are housed inside a cylindrical hydrophone of 25.4 mm length and 10.7 mm diameter. The collected data is archived in nonvolatile memory chips with a total capacity of 4 Mb, sufficient storage to record position, temperature and pressure on an hourly basis for two years. The tag consumes 4-5 uW in standby mode and between 60-90 ?W while the sound arrival time detector is in operation. The power is provided by two button cell silver-oxide batteries, which enable an active tag lifetime of approximately two years. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Atmospheric and Oceanic Technology American Meteorological Society

A miniature acoustic device for tracking small marine animals or submerged drifters

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0426
D.O.I.
10.1175/JTECH-D-17-0127.1
Publisher site
See Article on Publisher Site

Abstract

AbstractThis paper presents an acoustic archival tag capable of tracking small marine animals. It is also a technology that can be ported to other platforms such as next generation acoustic and Argo floats as well as gliders. Tracking is achieved by standard RAFOS triangulation using the arrival times of unique sound signals emitted by moored sources. At the core of the tag is a custom microchip, which controls all system operations. It incorporates the critical acoustic arrival time detector, a thermal sensor and a pressure sensor interface. All electronic components are housed inside a cylindrical hydrophone of 25.4 mm length and 10.7 mm diameter. The collected data is archived in nonvolatile memory chips with a total capacity of 4 Mb, sufficient storage to record position, temperature and pressure on an hourly basis for two years. The tag consumes 4-5 uW in standby mode and between 60-90 ?W while the sound arrival time detector is in operation. The power is provided by two button cell silver-oxide batteries, which enable an active tag lifetime of approximately two years.

Journal

Journal of Atmospheric and Oceanic TechnologyAmerican Meteorological Society

Published: Oct 17, 2017

References

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