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Sensors 2012, 12(4), 4352-4380; doi:10.3390/s120404352

A Reverse Localization Scheme for Underwater Acoustic Sensor Networks

* ,
Department of Computer Systems and Communication, Universiti Teknologi Malaysia, UTM Skudai 81310, Johor, Malaysia
* Author to whom correspondence should be addressed.
Received: 16 February 2012 / Revised: 18 March 2012 / Accepted: 19 March 2012 / Published: 29 March 2012
(This article belongs to the Special Issue Underwater Sensor Nodes and Underwater Sensor Networks)
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Underwater Wireless Sensor Networks (UWSNs) provide new opportunities to observe and predict the behavior of aquatic environments. In some applications like target tracking or disaster prevention, sensed data is meaningless without location information. In this paper, we propose a novel 3D centralized, localization scheme for mobile underwater wireless sensor network, named Reverse Localization Scheme or RLS in short. RLS is an event-driven localization method triggered by detector sensors for launching localization process. RLS is suitable for surveillance applications that require very fast reactions to events and could report the location of the occurrence. In this method, mobile sensor nodes report the event toward the surface anchors as soon as they detect it. They do not require waiting to receive location information from anchors. Simulation results confirm that the proposed scheme improves the energy efficiency and reduces significantly localization response time with a proper level of accuracy in terms of mobility model of water currents. Major contributions of this method lie on reducing the numbers of message exchange for localization, saving the energy and decreasing the average localization response time.
Keywords: localization; underwater wireless sensor networks; reverse localization scheme   localization; underwater wireless sensor networks; reverse localization scheme  
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Moradi, M.; Rezazadeh, J.; Ismail, A.S. A Reverse Localization Scheme for Underwater Acoustic Sensor Networks. Sensors 2012, 12, 4352-4380.

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