传感技术学报2017，Vol.30Issue(4)：611-617,7.DOI:10.3969/j.issn.1004-1699.2017.04.022
WSN中DV-Hop节点定位算法的改进
Improvement of DV-Hop Node Localization Algorithm in WSN
任克强 1李亚杰1
作者信息
- 1. 江西理工大学信息工程学院,江西 赣州 341000
- 折叠
摘要
Abstract
In order to reduce the estimation error of the traditional DV-Hop algorithm,an improved DV-Hop algorithm based on modification of estimation distance was proposed to enhance the localization accuracy of unknown nodes in WSN.Firstly,the improved algorithm modified average distance per hop for nodes,and degree of distance among notes was introduced according to the nodes distribution and the characteristics of neighbor relation between nodes,so as to distinguish the distance between unknown nodes and anchor nodes,and to reduce the error of the estimation distance.Then,the error of the least squares method was modified,and the constraint relationships of communication range between neighbor nodes were utilized to modify the error of the estimation coordinates for unknown nodes,which could further reduce the error of locating unknown nodes.The experimental results show that compared with the traditional DV-Hop algorithm and the related reference,the improved algorithm can effectively reduce the error of the estimation distance for unknown nodes,and improve the localization accuracy of unknown nodes.关键词
无线传感器网络/节点定位/DV-Hop算法/估算距离/误差修正Key words
wireless sensor network/node localization/DV-Hop algorithm/estimation distance/error modification分类
信息技术与安全科学引用本文复制引用
任克强,李亚杰..WSN中DV-Hop节点定位算法的改进[J].传感技术学报,2017,30(4):611-617,7.
