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Sensors 2010, 10(4), 3090-3099; doi:10.3390/s100403090

Design and Instrumentation of a Measurement and Calibration System for an Acoustic Telemetry System

1,* , 1
1 Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99332, USA 2 U.S. Army Corps of Engineers, Portland District, P.O. Box 2946, Portland, OR 97208, USA
* Author to whom correspondence should be addressed.
Received: 31 January 2010 / Revised: 20 February 2010 / Accepted: 23 March 2010 / Published: 31 March 2010
(This article belongs to the Special Issue Advances in Transducers)
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The Juvenile Salmon Acoustic Telemetry System (JSATS) is an active sensing technology developed by the U.S. Army Corps of Engineers, Portland District, for detecting and tracking small fish. It is used primarily for evaluating behavior and survival of juvenile salmonids migrating through the Federal Columbia River Power System to the Pacific Ocean. It provides critical data for salmon protection and development of more “fish-friendly” hydroelectric facilities. The objective of this study was to design and build a Measurement and Calibration System (MCS) for evaluating the JSATS components, because the JSATS requires comprehensive acceptance and performance testing in a controlled environment before it is deployed in the field. The MCS consists of a reference transducer, a water test tank lined with anechoic material, a motion control unit, a reference receiver, a signal conditioner and amplifier unit, a data acquisition board, MATLAB control and analysis interface, and a computer. The fully integrated MCS has been evaluated successfully at various simulated distances and using different encoded signals at frequencies within the bandwidth of the JSATS transmitter. The MCS provides accurate acoustic mapping capability in a controlled environment and automates the process that allows real-time measurements and evaluation of the piezoelectric transducers, sensors, or the acoustic fields. The MCS has been in use since 2009 for acceptance and performance testing of, and further improvements to, the JSATS.
Keywords: underwater transducers; piezoelectric sensors; acoustic telemetry underwater transducers; piezoelectric sensors; acoustic telemetry
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Deng, Z.; Weiland, M.; Carlson, T.; Eppard, M.B. Design and Instrumentation of a Measurement and Calibration System for an Acoustic Telemetry System. Sensors 2010, 10, 3090-3099.

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