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International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 962523, 12 pages
http://dx.doi.org/10.1155/2012/962523
Review Article

A Survey of Localization in Wireless Sensor Network

1College of Information Science and Engineering, Northeastern University, Shenyang 110819, China
2Faculty of Engineering, University of Sydney, Sydney, 2006 NSW, Australia
3Faculty of Information and Control Engineering, Shenyang Jianzhu University, Shenyang 110168, China
4Department of Computer Science and Technology, University of Bedfordshire, Luton LU1 3JU, UK

Received 18 September 2012; Accepted 16 November 2012

Academic Editor: Wei Meng

Copyright © 2012 Long Cheng et al. 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

Localization is one of the key techniques in wireless sensor network. The location estimation methods can be classified into target/source localization and node self-localization. In target localization, we mainly introduce the energy-based method. Then we investigate the node self-localization methods. Since the widespread adoption of the wireless sensor network, the localization methods are different in various applications. And there are several challenges in some special scenarios. In this paper, we present a comprehensive survey of these challenges: localization in non-line-of-sight, node selection criteria for localization in energy-constrained network, scheduling the sensor node to optimize the tradeoff between localization performance and energy consumption, cooperative node localization, and localization algorithm in heterogeneous network. Finally, we introduce the evaluation criteria for localization in wireless sensor network.