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Localization Using Ray Tracing for Underwater Acoustic Sensor Networks

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2 Author(s)
Ameer, P.M. ; Dept. of Electron. & Commun., Nat. Inst. of Technol. Calicut, India ; Jacob, L.

Localization is an indispensable part for most Underwater Wireless Sensor Networks (UWSNs). In these networks, acoustic ranging signals are typically used. Because of the depth dependent sound speed, ray bends in water. This presents a unique problem making conventional localization algorithms assuming straight line distances between target and anchor nodes inaccurate. In this work, authors present a scheme that takes in to account bending of path, to provide an accurate location estimate in UWSNs. The approach makes use of standard ray equations to model the path followed by rays of sound in water. The results of the preliminary study using this scheme are also reported.

Published in:

Communications Letters, IEEE  (Volume:14 ,  Issue: 10 )