计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (13): 100-102.DOI: 10.3778/j.issn.1002-8331.2009.13.030

• 网络、通信、安全 • 上一篇    下一篇

夹角修正的DV-hop传感器网络节点定位研究

赵 虹1,孙 光2,秦姣华3,唐飞岳4   

  1. 1.中南大学 信息中心,长沙 410011
    2.湖南财经高等专科学校 信息管理系,长沙 410205
    3.湖南城市学院 数学与计算科学系,湖南 益阳 413000
    4.湖南交通职业技术学院 信息管理系,长沙 410004
  • 收稿日期:2008-11-24 修回日期:2009-02-26 出版日期:2009-05-01 发布日期:2009-05-01
  • 通讯作者: 赵 虹

Research on angle-refined DV-hop localization method in WSNs

ZHAO Hong1,SUN Guang2,QIN Jiao-hua3,TANG Fei-yue4   

  1. 1.Department of Information,Central South University,Changsha 410011,China
    2.Department of Information Management,Hunan Financial & Economic College,Changsha 410205,China
    3.Department of Mathematics and Computing Sciences,Hunan City University,Yiyang,Hunan 413000,China
    4.Department of Information Management,Hunan Communication Ploytechnic,Changsha 410004,China
  • Received:2008-11-24 Revised:2009-02-26 Online:2009-05-01 Published:2009-05-01
  • Contact: ZHAO Hong

摘要: 位置信息对于无线传感器网络中的事件监测必不可少,考虑到传感器网络中节点能量和资源受限的特性,针对现有定位方法的不足,提出距离无关的ARDV-hop算法,通过夹角修正方式以提高定位精度。该方法先基于传统DV-hop算法获取平均每跳距离,然后逐一选取锚节点间通信线路中部的节点,通过该节点与两端锚节点的夹角来修正平均每跳距离,从而提高全网节点定位的准确性。仿真实验结果表明夹角的修正方式对于提高定位精度十分有效,即使在网络中节点分布不均匀的情况下仍能准确定位。

关键词: 距离无关, 节点定位, DV-hop, 跳距, 修正

Abstract: Localization information is necessary and important for the event monitoring in Wireless Sensor Networks.Analysis of existing localization techniques,aiming at the characteristics of energy limited and resource constrained WSNs,a novel localization method,Angle-Refined DV-hop(ARDV-hop) is proposed.The method improves the precision of range-free localization using angle refined method.It estimates the average hop distance by traditional DV-hop,and then selects the middle node between every two anchor nodes one by one.The obtained hop distance is refined by the angle between the selected middle nodes and the two anchor nodes,and hence the precision of localization in the whole network is improved.The results of simulation demonstrate that ARDV-hop can effectively improve the precision.Even if the density of nodes is not uniform,it also can accurately localize the nodes.

Key words: range free, localization, DV-hop, hop distance, refine