title: An MEF-Based Localization Algorithm against Outliers in Wireless Sensor Networks.
abstract: Precise localization has attracted considerable interest in Wireless Sensor Networks (WSNs) localization systems. Due to the internal or external disturbance, the existence of the outliers, including both the distance outliers and the anchor outliers, severely decreases the localization accuracy. In order to eliminate both kinds of outliers simultaneously, an outlier detection method is proposed based on the maximum entropy principle and fuzzy set theory. Since not all the outliers can be detected in the detection process, the Maximum Entropy Function (MEF) method is utilized to tolerate the errors and calculate the optimal estimated locations of unknown nodes. Simulation results demonstrate that the proposed localization method remains stable while the outliers vary. Moreover, the localization accuracy is highly improved by wisely rejecting outliers.
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Xueyuan Road No.37, Haidian District, Beijing 100191, China. wangdd@buaa.edu.cn.
authors.forename: Dandan
authors.initials: D
authors.lastname: Wang
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Xueyuan Road No.37, Haidian District, Beijing 100191, China. jwwan@buaa.edu.cn.
authors.forename: Jiangwen
authors.initials: J
authors.lastname: Wan
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Xueyuan Road No.37, Haidian District, Beijing 100191, China. may@aspe.buaa.edu.cn.
authors.forename: Meimei
authors.initials: M
authors.lastname: Wang
authors.affiliation: School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Xueyuan Road No.37, Haidian District, Beijing 100191, China. youleyuanzq@buaa.edu.cn.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
keywords: fuzzy set theory; localization; maximum entropy principle; outliers; wireless sensor networks