计算机应用 ›› 2012, Vol. 32 ›› Issue (08): 2103-2105.DOI: 10.3724/SP.J.1087.2012.02103

• 网络与通信 • 上一篇    下一篇

改进的无线传感器网络节点定位算法

张宏君1,毛永毅2   

  1. 1. 西安邮电大学 通信与信息工程学院,西安 710061
    2. 西安邮电大学 电子工程学院,西安 710061
  • 收稿日期:2012-02-16 修回日期:2012-03-15 发布日期:2012-08-28 出版日期:2012-08-01
  • 通讯作者: 张宏君
  • 作者简介:张宏君(1987-),男,陕西渭南人,硕士研究生,主要研究方向:移动台定位、无线传感器网络;
    毛永毅(1969-),男,湖南长沙人,教授,博士,主要研究方向:通信信号处理、移动台定位。
  • 基金资助:
    陕西省自然科学基金资助项目(2009JM8015);陕西省教育厅专项科研项目(2010JK815)

Improved algorithm of wireless sensor network node localization

ZHANG Hong-jun1,MAO Yong-yi2   

  1. 1. School of Telecommunication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an Shaanxi 710061, China
    2. School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an Shaanxi 710061, China
  • Received:2012-02-16 Revised:2012-03-15 Online:2012-08-28 Published:2012-08-01
  • Contact: ZHANG Hong-jun

摘要: 为了减小无线传感器网络(WSN)节点定位中非视距传播误差产生的影响,提高节点定位精度,提出一种基于残差加权的牛顿迭代定位算法。先利用残差加权算法定位,得到未知节点的初步位置,再将该节点位置作为牛顿迭代定位算法的初始值进行迭代计算,最终得到更为精确的节点位置。仿真实验结果表明,该算法能有效地抑制非视距传播误差的影响,提高传感器网络节点定位的精度,且性能稳定。

关键词: 无线传感器网络, 定位算法, 非视距, 牛顿迭代, 残差加权

Abstract: In order to eliminate the influence of Non-Line-Of-Sight (NLOS) transmission error in wireless sensor network node localization, and solve the problem of possible convergence in the Newton iterative algorithm, a Newton iterative localization algorithm based on the weighted residual was proposed. First, residual weighting algorithm was used for positioning to get the unknown node's preliminary position, then the node position was used as an initial value to iterate and calculate in Newton iterative localization algorithm, finally the precise position of the unknown node was obtained. The simulation results show that this algorithm can effectively restrain the effect of NLOS propagation error, improve the precision of sensor network node localization, and has stable performance.

Key words: Wireless Sensor Network (WSN), localization algorithm, Non-Line-Of-Sight (NLOS), Newton iteration, weighted residual

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