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| 基于RSSI的无线传感器网络加权质心定位算法 | |
| 引用本文： | 陈维克,李文锋,首珩,袁兵.基于RSSI的无线传感器网络加权质心定位算法[J].武汉理工大学学报(交通科学与工程版),2006,30(2):265-268. |
| 作者姓名： | 陈维克 李文锋 首珩 袁兵 |
| 作者单位： | 1. 武汉理工大学物流工程学院,武汉,430063;湖南治金职业技术学院,株洲,412000 2. 武汉理工大学物流工程学院,武汉,430063 3. 湖南铁道职业技术学院,株洲,412000 |
| 基金项目： | 中国科学院资助项目;湖北省青年杰出人才基金 |
| 摘 要： | 节点定位是无线传感器网络中的关键技术之一．文中通过对无线电传播路径损耗模型的分析，提出了加权质心定位算法，用信标节点对未知节点的不同影响力来确定加权因子，以提高定位精度．并且在理论分析的基础上，提出了优选信标节点进行节点定位计算的规则，以此进一步提高节点定位精度．加权质心定位算法计算简单，定位过程中节点问无通信开销．节点定位精度较常用的极大似然估计算法高，具有较普遍的应用意义． |
| 关 键 词： | 无线传感器网络 定位 质心算法 信标节点 极大似然估计 |
| 收稿时间： | 2005-11-12 |
| 修稿时间： | 2005年11月12 |
Weighted Centroid Localization Algorithm Based on RSSI for Wireless Sensor Networks |
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| Chen Weike,Li Wenfeng,Shou Heng,Yuan Bing.Weighted Centroid Localization Algorithm Based on RSSI for Wireless Sensor Networks[J].journal of wuhan university of technology(transportation science&engineering),2006,30(2):265-268. | |
| Authors: | Chen Weike Li Wenfeng Shou Heng Yuan Bing |
| Institution: | 1.School of Logistics Eng. ,WUT, Wuhan 430063;2.Dept. of Mechanical Eng. , Hunan Metallurgical Professional Technology Co llege , Zhuzhou 412000;3.Hunan Railway Professional Technology College, Zhuzhou 412000 |
| Abstract: | Localization of nodes is a key technology for application of wireless sensor network. By analyzing the model of radio wave propagation loss, this paper provides a weighted centroid localization algorithm that uses coefficients, which are decided by the influence of beacons to unknown nodes, to prompt localization accuracy. A criterion which is used to select beacon nodes for computing the position of nodes and improving localization accuracy is also suggested. Weighted centroid localization algorithm is simple and no communication is needed while locating. The weighted centroid localization algorithm has higher accuracy than maximum likelihood estimation and can be applied to many applications. |
| Keywords: | wireless sensor network localization centroid algorithm beacon node maximum likelihood estimate |
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