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计算机工程 ›› 2012, Vol. 38 ›› Issue (7): 66-69. doi: 10.3969/j.issn.1000-3428.2012.07.022

• 网络与通信 • 上一篇    下一篇

改进的无线传感器网络DV-Hop定位算法

王 颖1,石昊旸2   

  1. (1. 沈阳理工大学环境与化学工程学院,沈阳 110159; 2. 中国人民解放军65021部队,沈阳 110162)
  • 收稿日期:2011-09-19 出版日期:2012-04-05 发布日期:2012-04-05
  • 作者简介:王 颖(1973-),女,讲师、硕士,主研方向:无线传感器网络;石昊旸,工程师、硕士

Improved DV-Hop Localization Algorithm for Wireless Sensor Network

WANG Ying 1, SHI Hao-yang 2   

  1. (1. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China; 2. PLA 65021 Troops, Shenyang 110162, China)
  • Received:2011-09-19 Online:2012-04-05 Published:2012-04-05

摘要: 在无线传感器网络中,DV-Hop定位算法在计算未知节点到锚节点的距离以及相邻节点跳距时存在较大误差。为此,提出一种改进的DV-Hop定位算法。在未知节点到锚节点的路径中,考虑相邻3个节点组成的夹角对距离的影响,根据邻近节点重叠度计算夹角,引入网络平均连通度计算节点间的跳距,从而更精确地计算距离。仿真结果表明,改进算法可提高节点的定位精度和覆盖率。

关键词: 无线传感器网络, 定位算法, 覆盖率, 平均连通度, DV-Hop算法

Abstract: This paper proposes an improved Distance Vector-Hop(DV-Hop) localization algorithm, because of a big jump from the error of using the DV-Hop algorithm to compute the distance from unknown node to beacon node and computing the jump distance of neighbor node in the Wireless Sensor Network(WSN). In the path from unknown nodes to anchor nodes, it considers the influence of three adjacent nodes angle to the distance, and computes the angle through the adjacent nodes overlap. It introduces average connectivity degree compute hop distance to more accurately calculate the distance. Simulation result proves that the improved algorithm can increase location precision and coverage rate.

Key words: Wireless Sensor Network(WSN), localization algorithm, coverage rate, average connectivity, DV-Hop algorithm

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