传感技术学报Issue(8)：1088-1093,6.DOI:10.3969/j.issn.1004-1699.2014.08.016
基于抗差估计方法的WSN节点定位算法研究
A Robust Estimation Based localization algorithm for WSNs
摘要
Abstract
In practical applications,the ranging distance between sensor nodes in wireless sensor networks( WSNs) usually contain gross error. It will seriously affect the accuracy and reliability of localization result. We introduce differential robust estimation theory,use the IGGⅢ weight factor function,and design a robust estimation based localization algorithm. The proposed algorithm can handle the different measurement data contains different amplitude error properly,and get more accurate positioning results.The simulation results show that,the localization results estimated by the proposed algorithm and that estimated by the traditional least-squares( LS) algorithm keep a good equivalence when there is no gross error in the ranging distance;and when the ranging distance contain gross error,by means of choosing threshold,the proposed algorithm achieve higher accuracy than traditional LS algorithm,and show robust property for parameter estimation.关键词
无线传感器网络/定位/最小二乘估计/抗差估计Key words
wireless sensor networks/localization/least square estimation/robust estimation EEACC/6150P/7230分类
信息技术与安全科学引用本文复制引用
张亚明,史浩山,刘燕,程伟,蒋毅..基于抗差估计方法的WSN节点定位算法研究[J].传感技术学报,2014,(8):1088-1093,6.基金项目
国家自然科学基金项目(61301092，61401360)；中央高校基本科研业务费专项资金项目(3102014JCQ01055)；陕西省自然科学基金项目(2012JQ8005) （61301092，61401360）
