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Mobile Information Systems
Volume 8 (2012), Issue 1, Pages 61-72
http://dx.doi.org/10.3233/MIS-2012-0131

A Localization Algorithm Based on AOA for Ad-Hoc Sensor Networks

Yang Sun Lee,1 Jang Woo Park,2 and Leonard Barolli3

1Department of Information Communication Engineering, Chosun University, Chosun, Republic of Korea
2Department of Information and Communication Engineering, Sunchon National University, Sunchon, Republic of Korea
3Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), Fukuoka, Japan

Received 16 February 2012; Accepted 16 February 2012

Copyright © 2012 Hindawi Publishing Corporation. 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.

Abstract

Knowledge of positions of sensor nodes in Wireless Sensor Networks (WSNs) will make possible many applications such as asset monitoring, object tracking and routing. In WSNs, the errors may happen in the measurement of distances and angles between pairs of nodes in WSN and these errors will be propagated to different nodes, the estimation of positions of sensor nodes can be difficult and have huge errors. In this paper, we will propose localization algorithm based on both distance and angle to landmark. So, we introduce a method of incident angle to landmark and the algorithm to exchange physical data such as distances and incident angles and update the position of a node by utilizing multiple landmarks and multiple paths to landmarks.