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http://dx.doi.org/10.5139/JKSAS.2011.39.8.750

A Range-Free Localization Algorithm for Sensor Networks with a Helicopter-based Mobile Anchor Node  

Lee, Byoung-Hwa (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.8, 2011 , pp. 750-757 More about this Journal
Abstract
Wireless Sensor Network is composed of a lot of sensor nodes that are densely deployed in a field. So generally this sensor nodes are spreaded using Helicopter or Fixed wing. Each node delivers own location and acquired information to user when it detects specific events. In this paper, we propose localization algorithm without range information in wireless sensor network using helicopter. Helicopter broadcasts periodically beacon signal for sensor nodes. Sensor nodes stored own memory this beacon signal until to find another beacon point(satisfied special condition). This paper develops a localization mechanism using the geometry conjecture(perpendicular bisector of a chord) to know own location. And the simulation results demonstrate that our localization scheme outperforms Centroid, APIT in terms of a higher location accuracy.
Keywords
Wireless Sensor Network; Localization; Helicopter; Mobile Anchor Node; Bisector; RSSI;
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