计算机工程与应用 ›› 2017, Vol. 53 ›› Issue (2): 231-235.DOI: 10.3778/j.issn.1002-8331.1504-0051

• 工程与应用 • 上一篇    下一篇

基于Taylor展开的UWB井下定位算法研究与实现

谢芝玉,刘雄飞,胡志坤   

  1. 中南大学 物理与电子学院,长沙 410083
  • 出版日期:2017-01-15 发布日期:2017-05-11

Research and design of underground coal mine positioning method based on Taylor algorithm

XIE Zhiyu, LIU Xiongfei, HU Zhikun   

  1. School of Physics and Electronics, Central South University, Changsha 410083, China
  • Online:2017-01-15 Published:2017-05-11

摘要: 针对无线信号在煤矿巷道中传播时由于多径效应明显,而导致定位精度不高的问题,通过对UWB定位模型进行分析,提出一种基于Taylor级数展开的UWB(Ultra Wide-Band)定位算法。考虑Taylor级数迭代算法对初始值依赖性很高的问题,首先采用三点直接定位算法对目标节点进行粗定位,然后通过阈值筛选和权重计算产生Taylor定位的初始值,再进行迭代求解,进行第二次精确定位。一个基于UWB无线定位系统平台对该算法进行了验证,结果表明该算法可以保证最大定位误差为0.4 m,基本满足井下定位的需要。

关键词: Taylor级数展开, 阈值筛选, 权重计算, (UWB)定位系统

Abstract: A novel Taylor positioning scheme for underground coal mine is presented to improve the positioning accuracy. Considering the Taylor algorithm depends on the initial value highly, the algorithm uses weight and threshold to choose the initial value by excluding coordinates which are of great error and then calculate the rest of coordinates based on weight. UWB wireless positioning system is designed to achieve this algorithm, the results show that the positioning accuracy achieves 0.4 m, which demonstrates it is suitable for coal mine environment.

Key words: Taylor algorithm;threshold selection, calculation based on weight, positioning system based on Ultra Wide-Band(UWB) technology