Paper Info
Title
A Polygonal Method for Ranging-Based Localization in an Indoor Wireless Sensor Network
Abstract
In this paper, we propose an indoor localization method in a wireless sensor network based on IEEE 802.15.4 specification. The proposed method follows a ranging-based approach using not only the measurements of received signal strength (RSS) but also the coordinates of the anchor points (APs). The localization accuracy depends on the errors in the distance estimation with the RSS measurements and the size of the polygon composed of the APs used for the lateration. Since errors are inevitably involved in the RSS measurement, we focus on reducing the size of the polygon to increase the localization accuracy. We use the centroid of the polygon as a reference point to estimate the relative location of a target in the polygon composed of the APs hearing the target. Once the relative position is estimated, only the APs covering the area are used for localization. We implement the localization method and evaluate the accuracy of the proposed method in various radio propagation environments. The experimental results show that the proposed method improves the localization accuracy and is robust against the dynamically changing radio propagation environments over time.
Year
DOI
Venue
2011
10.1007/s11277-011-0306-7
Wireless Personal Communications
Keywords
Field
DocType
Indoor localization,Received signal strength,Lateration,Centroid of a polygon
Polygon,Computer science,Real-time computing,Ranging,Signal strength,Wireless sensor network,RSS,Radio propagation,Centroid
Journal
Volume
Issue
ISSN
60
3
0929-6212
Citations 
PageRank 
References 
2
0.39
15
Authors
4
Name
Order
Citations
PageRank
Jaesung Park112740.42
Yujin Lim214327.95
Kil-hung Lee394.92
Yong-hoon Choi412923.81