Improved DV-Hop Node Localization Algorithm in Wireless Sensor Networks

An improved algorithm is put forward to improve the poor locating performance of the DV-Hop algorithm, which is one of the range-free algorithms in wireless sensor networks. Firstly, we set some anchor nodes at the border land of monitoring regions. Secondly, the average one-hop distance between anc...

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Bibliographic Details
Published in:International journal of distributed sensor networks Vol. 2012; no. 2012; pp. 1 - 7
Main Authors: Chen, Xiao, Zhang, Benliang
Format: Journal Article
Language:English
Published: Cairo, Egypt Hindawi Puplishing Corporation 01.01.2012
SAGE Publications
John Wiley & Sons, Inc
Wiley
Subjects:
Accuracy
Algorithms
Anchors
Borders
Communication
Estimation theory
Floods
Indoor positioning systems (Wireless localization)
Localization
Monitoring
Networks
Optimization algorithms
Position (location)
Sensors
Studies
Voronoi polygons
Wireless networks
Wireless sensor networks
ISSN:1550-1329, 1550-1477, 1550-1477
Online Access:Get full text
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Summary:An improved algorithm is put forward to improve the poor locating performance of the DV-Hop algorithm, which is one of the range-free algorithms in wireless sensor networks. Firstly, we set some anchor nodes at the border land of monitoring regions. Secondly, the average one-hop distance between anchor nodes is modified, and the average one-hop distance used by each unknown node for estimating its location is modified through weighting the received average one-hop distances from anchor nodes. Finally, we use the particle swarm optimization to correct the position estimated by the 2D hyperbolic localization algorithm, which makes the result closer to the actual position. The simulation results show that the proposed algorithm has better localization performance in the localization precision and stability than the basic DV-Hop algorithm and some existing improved algorithms.
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ISSN:1550-1329
1550-1477
1550-1477
DOI:10.1155/2012/213980