摘要
UWB超宽带技术(Ultra-Wide Band)是一种新兴的无线电技术,定位精度高,受其他因素干扰较小,适宜用于室内定位。因此,以UWB测距技术为研究对象,以三球交汇法为定位方法,介绍了最小二乘法与直接求解法两种求解算法,提出了采用圆概率误差衡量系统定位精度。方案实现中,搭建了四基站一信标的定位模型,并利用最小二乘法对信标点进行位置解算。当误差满足既定圆概率误差时,即得到信标在室内的精确坐标。
UWB （Ultra--WideBand） technology is a new radio technology with high localization accuracy and less interference from other factors, which is suitable for indoor localization. This paper takes UWB ranging technology as the research object and three spheres intersection method as the localization method. It introduces the Least Squares method and direct solution method, and proposes to use the circular error probable （CEP） to measure the system localization accuracy. In the realization of the scheme, this paper sets up a localization model of four based anchor and one tag, and using the Least Squares method to compute the position of the tag. When the error is lower then the fixed circular error probable, the precise coordinates of the tag in the room are obtained.
作者
王锦涛
皇甫一鸣
李哲舟
冯婧
WANG Jin-tao;HUANGFU Yi-ming;LI Zhe-zhou;FENG Jing(Nanjing University of Aeronautics and Astronautics,Nanjing211100,China)
出处
《通信电源技术》
2018年第5期50-53,56,共5页
Telecom Power Technology
关键词
UWB
三球交汇
最小二乘法
圆概率误差
UWB
three spheres intersection
least squares
circular error probable
