无线传感器网络中基于能量级加权的质心定位算法  

Power-weighted Centroid Localization Algorithm in Wireless Sensor Networks

作　　者：刘文远[1] 张作良[1] 陈子军[1] 王林[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《小型微型计算机系统》2011年第9期1845-1848,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60970123)资助

摘　　要：针对无线传感器网络的内在特点以及传统质心定位方法的局限性,提出一种基于能量级加权的质心定位算法——PWC定位算法.它完全基于网络连通性,采用信标节点的能量级信息作为加权因子计算未知节点位置,体现了不同信标节点对质心计算结果的影响.仿真结果表明,该算法减小了平均定位误差,是一种适合大规模传感器网络应用的节点定位算法.For the inherent characteristics of wireless sensor networks and the limitations of classical centroid locating algorithm, this paper presents a novel centroid locating algorithm based on power weighted. This algorithm is based exclusively on connectivity and uses power levels information of beacon nodes as weight factor to calculate the estimated position of unknown nodes, whose power levels influences the result of centroid calculation. Simulations demonstrate that this algorithm can reduce the average locating errors and it is fit for mass wireless sensor networks application.

关 键 词：无线传感器网络 节点定位 质心算法 信号传播模型 能量级加权 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]