• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2014, Vol. 36 ›› Issue (05): 917-922.

• 论文 • 上一篇    下一篇

基于粒子群的射频识别定位算法

温佩芝1,苏亭婷1,李丽芳1,张建军2   

  1. (1.桂林电子科技大学计算机科学与工程学院,广西 桂林 541004;2.中国化工橡胶桂林有限公司,广西 桂林 541004)
  • 收稿日期:2012-11-23 修回日期:2013-03-29 出版日期:2014-05-25 发布日期:2014-05-25
  • 基金资助:

    广西科技计划资助项目(桂科攻1110700610);广西自然科学基金资助项目(桂科自0991240)

PSO-based RFID positioning algorithm       

WEN Peizhi1,SU Tingting1,LI Lifang1,ZHANG Jianjun2   

  1. (1.School of Computer Science and Engineering,Guilin University of Electronic Technology,Guilin 541004;
    2.China National Chemical Rubber Guilin Corporation Limited,Guilin 541004,China)
  • Received:2012-11-23 Revised:2013-03-29 Online:2014-05-25 Published:2014-05-25

摘要:

针对传统室内定位方法定位精度低、开销大等问题,提出一种基于粒子群的射频识别定位算法。首先采用高斯滤波对读取到的信号强度指示RSSI进行预处理,以减少环境因素对信号的干扰,使RSSI值与标签实际位置相符。其次,以网格排列的参考标签作为辅助,通过引入粒子群优化算法,经多次迭代找出最优值,计算出待定位标签的估计坐标,提高定位精度。最后,采用拉格朗日插值法计算虚拟标签的信号强度指示值,使其更接近于真实标签的值。实验表明,该算法可有效提高定位精度和效率,并减少开销。

关键词: 粒子群算法, 高斯滤波, RFID室内定位, VIRE, 拉格朗日插值

Abstract:

In order to solve low positioning accuracy and high cost in traditional positioning methods, the PSObased RFID positioning approach is proposed. Firstly,aiming at the interference of environmental factors on the signals,Gaussian Smoothing Filter is adopted to preprocess RSSI(Received Signal Strength Indicator) values.Secondly,based on gridstyle reference tags,PSO algorithm is introduced to estimate the optimal positions of tracking tags by several iterations,thus improving the positioning accuracy.Finally,the RSSI values of virtual reference tags are calculated by Lagrange interpolation,so as to be more close to the values of real tags.Experimental results demonstrate that the proposed approach has excellent accuracy,high efficiency and low cost in indoor positioning.

Key words: PSO;Gaussian filtering;RFID indoor positioning;VIRE;Lagrange interpolation