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计算机工程 ›› 2013, Vol. 39 ›› Issue (8): 126-130. doi: 10.3969/j.issn.1000-3428.2013.08.026

• 移动互联与通信技术 • 上一篇    下一篇

无线传感器网络栅格扫描定位算法研究

李牧东1,熊 伟1,梁 青2   

  1. (1. 空军工程大学电讯工程学院,西安 710077;2. 西安邮电大学电子与信息工程系,西安 710121)
  • 收稿日期:2012-04-01 出版日期:2013-08-15 发布日期:2013-08-13
  • 作者简介:李牧东(1987-),男,硕士研究生,主研方向:无线传感器网络;熊 伟,副教授、博士;梁 青,副教授、硕士

Research on Grid Scan Localization Algorithm for Wireless Sensor Network

LI Mu-dong   1, XIONG Wei   1, LIANG Qing    2   

  1. (1. Institute of Telecommunication Engineering, Air Force Engineering University, Xi’an 710077, China; 2. Dept. of Electronics and Information Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710121, China)
  • Received:2012-04-01 Online:2013-08-15 Published:2013-08-13

摘要: 栅格扫描算法是无线传感器网络中一种典型的无需测距的定位算法。分析并仿真该算法中对定位误差、定位率及定位时间有较大影响的网络平均连通度、锚节点个数、节点通信半径以及栅格边长等重要参数。仿真结果表明,邻锚节点个数是影响定位误差及定位率的主要因素,栅格边长对定位误差起调节作用,而总节点数是影响定位时间的主要参数,并且在固定监测区域内,存在较优的参数设置,能够有效降低定位误差并提高定位率。

关键词: 无线传感器网络, 无需测距, 栅格扫描, 参数优化, 定位性能

Abstract: Grid scan algorithm is a typical range-free localization algorithm in Wireless Sensor Network(WSN). This paper analyzes and simulates the important parameters including average network connectivity, beacon nodes number, communication radius and grid length, which have great impact on location error, localization rate and time. The simulation results show that neighbor beacon nodes number of unknown nodes is the main factor which impacts on localization precision and rate. Grid length can improve the location error and total nodes number is the main parameter which affects the localization time. On the other hand, there are the optimum values of parameters in the fixed monitoring area, which can improve localization precision and rate effectively.

Key words: Wireless Sensor Network(WSN), range-free, grid scan, parameters optimization, localization performance

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