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。
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.
作者
谢芝玉
刘雄飞
胡志坤
XIE Zhiyu;LIU Xiongfei;HU Zhikun(School of Physics and Electronics, Central South University, Changsha 410083, China)
出处
《计算机工程与应用》
CSCD
北大核心
2017年第2期231-235,共5页
Computer Engineering and Applications
基金
中南大学中央高校基本科研业务费专项资金资助(No.2014zzts147)
关键词
Taylor级数展开
阈值筛选
权重计算
(UWB)定位系统
Taylor algorithm
threshold selection
calculation based on weight
positioning system based on Ultra WideBand(UWB)technology
