About this Journal Submit a Manuscript Table of Contents
International Journal of Distributed Sensor Networks
Volume 2013 (2013), Article ID 107024, 9 pages
http://dx.doi.org/10.1155/2013/107024
Research Article

BRS-Based Robust Secure Localization Algorithm for Wireless Sensor Networks

School of Instrumentation Science and Optoelectronics Engineering, Beijing University of Aeronautics and Astronautics (Beihang University), Beijing 100191, China

Received 6 October 2012; Revised 23 January 2013; Accepted 5 February 2013

Academic Editor: Sunho Lim

Copyright © 2013 Ning Yu 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 the key supporting technology for wireless sensor networks (WSNs). Security and accuracy are the premise of the localization application. Real-world applications of wireless sensor networks are often subject to a variety of adverse circumstances interference, and the localization performance is seriously affected. In this paper, we propose a BRS-based robust secure localization (BRSL) algorithm in order to reduce the impact of the malicious attackers in WSNs. The BRSL method includes two phases. In the first stage, the trust evaluation framework is established on the basis of beta reputation system. In the second phase, we employ the weighted Taylor-series least squares method to estimate the coordinates of sensor nodes. Simulation results demonstrate that the proposed algorithm is robust and effective.