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Sensors 2010, 10(5), 5171-5192; doi:10.3390/s100505171

Location Estimation in Wireless Sensor Networks Using Spring-Relaxation Technique

1,* , 1
Received: 25 March 2010 / Revised: 15 April 2010 / Accepted: 10 May 2010 / Published: 25 May 2010
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Accurate and low-cost autonomous self-localization is a critical requirement of various applications of a large-scale distributed wireless sensor network (WSN). Due to its massive deployment of sensors, explicit measurements based on specialized localization hardware such as the Global Positioning System (GPS) is not practical. In this paper, we propose a low-cost WSN localization solution. Our design uses received signal strength indicators for ranging, light weight distributed algorithms based on the spring-relaxation technique for location computation, and the cooperative approach to achieve certain location estimation accuracy with a low number of nodes with known locations. We provide analysis to show the suitability of the spring-relaxation technique for WSN localization with cooperative approach, and perform simulation experiments to illustrate its accuracy in localization.
Keywords: wireless sensor networks; localization; cooperative; spring-relaxation technique wireless sensor networks; localization; cooperative; spring-relaxation technique
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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Zhang, Q.; Foh, C.H.; Seet, B.-C.; Fong, A.C.M. Location Estimation in Wireless Sensor Networks Using Spring-Relaxation Technique. Sensors 2010, 10, 5171-5192.

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