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2013 International Conference on Information Networking (ICOIN)
Reliable anchor node based range-free localization algorithm in anisotropic wireless sensor networks
Bangkok Thailand
January 28-January 30
ISBN: 978-1-4673-5740-1
Hyunjae Woo, School of Electrical and Computer Engineering Ajou University Suwon, Korea
Chaewoo Lee, School of Electrical and Computer Engineering Ajou University Suwon, Korea
Seongkeun Oh, School of Electrical and Computer Engineering Ajou University Suwon, Korea
In the wireless sensor networks, location based applications require an accurate localization algorithm. To estimate location, each normal node, which do not know its own location, uses estimated distances to anchor nodes which have their own location. Hence, the estimation of distance is a key issue in the wireless sensor networks localization. Most previous works assume isotropic networks where approximate the shortest path distances to the Euclidian distances. These approaches cannot obtain accurate distance estimations in anisotropic networks where the shortest path distances are not linearly proportion to the Euclidian distances. In the anisotropic networks, the shortest path between two nodes may be detoured and its length may be estimated much larger than the corresponding Euclidean distance. Because of the phenomenon, it is important to select reliable anchor nodes which offer the precisely estimated distance. In this paper, we propose a reliable anchor node selection algorithm in the anisotropic networks. Each normal node selects the three anchor nodes with Triangular rule to enhance localization accuracy in the proposed algorithm. We also show that our scheme is reasonable through mathematical observation.
Index Terms:
Reliable anchor,Localization,Range-fere,Isotropoic,Anisotropic
Citation:
Hyunjae Woo, Chaewoo Lee, Seongkeun Oh, "Reliable anchor node based range-free localization algorithm in anisotropic wireless sensor networks," icoin, pp.618-622, 2013 International Conference on Information Networking (ICOIN), 2013
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