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Proceedings Paper

Ad hoc localization technique for wireless sensor networks
Author(s): N. Shah; I. Zeid
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Paper Abstract

Location-awareness is a key enabler for using energy-conserving protocols and other location-based services in Wireless Sensor Networks (WSN). Due to the ad hoc nature of WSN, and resource-constrained sensor nodes, the localization technique must be infrastructure-free, computationally simple, and energy-efficient. In this paper we present an ad hoc localization technique that satisfies these requirements. The proposed localization technique is infrastructure-free, anchor-free, and is computationally efficient with reduced communication. We use a novel combination of TOA/TDOA and AOA ranging techniques to detect and estimate ranges between neighbors. Using this information we construct unidirectional coordinate systems to avoid the reflection ambiguity. This reduces the amount of information, and thus communication, required to induce location-awareness in sensor nodes. We then compute node positions using a transformation matrix [T] which reduces the computational complexity of the localization algorithm while computing positions relative to the fixed coordinate system.

Paper Details

Date Published: 25 October 2005
PDF: 12 pages
Proc. SPIE 6011, Performance, Quality of Service, and Control of Next-Generation Communication and Sensor Networks III, 60110A (25 October 2005); doi: 10.1117/12.630144
Show Author Affiliations
N. Shah, Northeastern Univ. (United States)
I. Zeid, Northeastern Univ. (United States)


Published in SPIE Proceedings Vol. 6011:
Performance, Quality of Service, and Control of Next-Generation Communication and Sensor Networks III
Mohammed Atiquzzaman; Sergey I. Balandin, Editor(s)

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