NDLI: Time-Synchronization Free Localization in Large Scale Underwater Acoustic Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Wei Cheng Thaeler, A. Xiuzhen Cheng Fang Liu Xicheng Lu Zexin Lu
Copyright Year	2009
Abstract	We introduce and study the localization problem in large scale underwater acoustic sensor networks. Considering that depth information is typically available for underwater sensors, we transform the 3D underwater positioning problem into its two-dimensional counterpart via a projection technique. We then introduce a localization scheme specifically designed for large scale acoustic underwater sensor networks. The proposed localization scheme does not require time-synchronization in the network. This scheme relies on time-differences of arrival (TDoA) measured locally at a sensor to detect range differences from the sensor to three anchors that can mutually hear each other. We consider variations in the speed of sound and analyze the performance of the proposed scheme in terms of the number of localized nodes, location errors, and the number of reference nodes.
Starting Page	80
Ending Page	87
File Size	227895
Page Count	8
File Format	PDF
ISBN	9780769536606
ISSN	15450678
DOI	10.1109/ICDCSW.2009.79
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-22
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Large-scale systems Underwater acoustics Acoustic sensors Underwater vehicles Computer science Global Positioning System Bandwidth Intelligent sensors Sensor systems USA Councils underwater positioning Underwater acoustic sensor networks localization navigation time-synchronization free projection
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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