Table of Contents Author Guidelines Submit a Manuscript
Journal of Electrical and Computer Engineering
Volume 2012, Article ID 683919, 11 pages
http://dx.doi.org/10.1155/2012/683919
Research Article

Underwater Localization and Tracking of Physical Systems

1Department of Electrical and Computer Engineering, University of Connecticut, Storrs, CT 06269, USA
2Department of Computer Science and Engineering, University of Connecticut, Storrs, CT 06269, USA

Received 15 December 2011; Accepted 16 May 2012

Academic Editor: Charalampos C. Tsimenidis

Copyright © 2012 Patrick Carroll et al. 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.

Abstract

We investigate the problem of localizing an underwater sensor node based on message broadcasting from multiple surface nodes. With the time-of-arrival measurements from a DSP-based multicarrier modem, each sensor node localizes itself based on the travel time differences among multiple senders to the receiver. Using one-way message passing, such a solution can scale to accommodate a large number of nodes in a network. We consider the issue from not only the physical layer, but also at the node processing layer by incorporating a tracking solution. We present simulation results, testing results in a swimming pool featuring both stationary and moving receivers, and results from a lake test with a mobile receiver.