计算机工程与应用2019，Vol.55Issue(15)：123-127,5.DOI:10.3778/j.issn.1002-8331.1806-0169
DV-Hop测距修正的定位算法研究
Positioning System of DV-Hop Localization Algorithm
摘要
Abstract
In order to improve the accuracy of localization algorithm based on DV-Hop ranging, an improved DV-Hop Ranging-based Logarithmic Search(DH-RLS)localization algorithm is proposed in this paper. DH-RLS first estimates the error of hop distance by the real distance between anchor nodes, and it corrects the hop distance to improve the ranging accuracy. The position of nodes is estimated by centroid localization algorithm, which is considered to be search initial point. DH-RLS employs search objective function, until the position with minimizing the sum of distance error is searched. Numerous simulation results show that normalized average localization error ratio of DH-RLS algorithm is less than that of traditional DV-Hop algorithm. The ranging error is reduced by correcting ranging value, and accuracy of local-ization is improved by search localization.关键词
无线传感网络/DV-Hop算法/质心定位/跳距/对数搜索Key words
wireless sensor network/ DV-Hop algorithm/ centroid localization/ average hop distance/ logarithmic search localization分类
信息技术与安全科学引用本文复制引用
余科军,张建州..DV-Hop测距修正的定位算法研究[J].计算机工程与应用,2019,55(15):123-127,5.基金项目
四川省教育厅基金(No.16ZB0378) （No.16ZB0378）
成都师范学院校级项目(No.CZ15ZB01). （No.CZ15ZB01）
