Robust and distributed range-free localization using anchor nodes with varying communication range for three dimensional wireless sensor networks

Authors:
Manas Kumar Mishra;M. M. Gore
Affiliations:
Department of Computer Science & Engineering, Motilal Nehru National Institute of Technology, Allahabad, India;Department of Computer Science & Engineering, Motilal Nehru National Institute of Technology, Allahabad, India
Venue:
ICDCIT'11 Proceedings of the 7th international conference on Distributed computing and internet technology
Year:
2011

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Abstract

Localization of the nodes in a sensor network is a premier activity which influences the performance of the network. The data collected by a sensor node may become useless if the location of that node is not known. Sensor networks are mostly deployed in areas where manual positioning of the sensor nodes is not feasible, and the topology and size of the network also changes frequently. Therefore, the localization schemes developed for these kinds of network need to be self-configurable and adaptive to the changes. This paper presents a localization scheme for three dimensional wireless sensor networks that not only helps sensor nodes to self-localize, but, it is also able to verify the estimated location and re-estimate it, if needed. The sensor nodes estimate their positions based on the position information of the GPS enabled anchor nodes. Simulation results show that the proposed method gains heavily in terms of the accuracy of the estimated positions.