| 无线传感器网络中基于RSSI的加权DV-HOP定位方法 |
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| 引用本文： | 周小波,乔钢柱,曾建潮.无线传感器网络中基于RSSI的加权DV-HOP定位方法[J].计算机工程与应用,2011,47(14):109-111. |
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| 作者姓名： | 周小波 乔钢柱 曾建潮 |
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| 作者单位： | 1. 太原科技大学计算机学院,太原,030024
2. 太原科技大学计算机学院,太原030024;兰州理工大学电信学院,兰州730050 |
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| 摘 要： | 节点位置是无线传感器网络应用不可缺少的信息。DV-HOP算法是一种常见的无线传感器网络节点自定位算法。标准DV-HOP算法在计算跳数时并未根据邻居节点间距离对跳数进行加权处理,导致当邻居节点间距离差别较大时算法定位精度低的问题。从RSSI的耗散模型可看出,RRSI可以作为距离的比征,提出一种基于RSSI的DV-HOP加权算法。该算法基于节点接收信标节点位置元组时的信号强度(RSSI)对邻居节点间跳数进行加权处理,将节点间的跳数与距离相关联。仿真实验结果证明该加权算法可大大提高定位精度。
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| 关 键 词： | 无线传感器网络 节点自定位 DV-HOP 接收信号强度指示器(RSSI) 加权 跳数 |
| 修稿时间： | |
RSSI based weighted DV-HOP localization algorithm for Wireless Sensor Networks |
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| ZHOU Xiaobo,QIAO Gangzhu,ZENG Jianchao.RSSI based weighted DV-HOP localization algorithm for Wireless Sensor Networks[J].Computer Engineering and Applications,2011,47(14):109-111. |
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| Authors: | ZHOU Xiaobo QIAO Gangzhu ZENG Jianchao |
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| Affiliation: | 1.College of Computer,Taiyuan University of Science and Technology,Taiyuan 030024,China 2.College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China |
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| Abstract: | The localization information is crucial for the operation of wireless sensor network（WSN）.DV-Hop is a typical way for the nodes self-localization in WSNs.However,the localization accuracy of DV-HOP is very low when the disparity in distance of the adjacent nodes is very large,because the hops of the adjacent nodes always increase 1 whenever the dis- tance is far or near.In this paper,an RSSI based weighted DV-HOP（RWDV-HOP） localization algorithm is presented.In this algorithm the hops of adjacent node is weighted by the RSS of flooding packets transmitted between adjacent node.This al- gorithm improves the localization accuracy compared with previous algorithms,which has been demonstrated by the simulat- ing results |
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| Keywords: | Wireless Sensor Network localization DVoHOP Received Signal Strength Indication （RSSI） hops |
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