NDLI: On-board underwater glider real-time acoustic environment sensing

Content Provider	IEEE Xplore Digital Library
Author	Dassatti, A. van der Schaar, M. Guerrini, P. Zaugg, S. Houegnigan, L. Maguer, A. Andre, M.
Copyright Year	2011
Description	Author affiliation: NATO Undersea Research Centre Viale San Bartolomeo 400 19126, La Spezia (Italy) (Dassatti, A.; Guerrini, P.; Maguer, A.) \|\| Laboratori d'Aplicacions Bioacústiques, Universitat Politècnica de Catalunya, Rambla Exposició s/n, 08800 Vilanova i la Geltrú, Barcelona (Spain) (van der Schaar, M.; Zaugg, S.; Houegnigan, L.; Andre, M.)
Abstract	Underwater gliders are autonomous vehicles that use small changes in their buoyancy in conjunction with wings to convert vertical motion to horizontal, and thereby propel themselves forward, with very low power consumption, through the ocean for a long period of time. Gliders typically make measurements such as temperature, conductivity (to calculate salinity), currents, chlorophyll fluorescence, optical backscatter and bottom depth. However, such a platform could be a good candidate if properly equipped with an acoustic payload to persistently monitor the underwater acoustic environment. For that reason, NURC and the Technical University of Catalonia (UPC) decided in 2010 to jointly develop a glider acoustic payload that would provide the recording of two hydrophones but also, which is quite unique, provide in addition a real-time detection / classification (DC) capability. The DC capability will allow, while the glider being at-sea, to provide real-time feedback on the acoustic environment the glider is passing by, instead of only providing recording capability for postprocessing work as previously done in the past. The purpose of the paper is to describe the characteristics of the system that has been developed and additionally reports at-sea results from a deep-water WEBB glider operating in the Mediterranean Sea. Those results demonstrate the capability of the developed acoustic payload to detect and classify marine mammals in real-time within the glider. Examples of the noise generated by the glider are also presented
Starting Page	1
Ending Page	8
File Size	1877896
Page Count	8
File Format	PDF
ISBN	9781457700866
e-ISBN	9781457700880
DOI	10.1109/Oceans-Spain.2011.6003482
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustics Payloads Sonar equipment Real time systems Temperature measurement Gain Noise
Content Type	Text
Resource Type	Article

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