基于TOF的UWB可移动基站快速自定位算法

针对运动场中超宽带(UWB)可移动基站的位置获取需要人工测量、定位不方便的问题,提出了基于飞行时间(TOF)的UWB可移动基站快速自定位方法.首先根据基站布局情况确定局部坐标系,建立基于UWB基站间相互测距信息的各基站坐标方程,采用最小二乘法对各基站的坐标进行解算,进而分析其定位误差.最后通过实验验证了算法的可行性和稳定性.实验结果表明,可移动基站平均定位精度在0.05m以内.相对于传统的人工测量方式,基站自定位可有效节省基站布设时间,减少工作量.

Fast Self Localization Algorithm for UWB Mobile Base Station Based on TOF

In order to solve the problem of manual measurement and inconvenient positioning for the location of UWB mobile base station in sports fields, a fast self positioning method for UWB mobile base station based on time of flight (TOF) is proposed. Firstly, the local coordinate system is determined according to the layout of the base station, and the coordinate equations of each base station are established based on the mutual ranging information between UWB base stations. The least square method is used to calculate the coordinates of each base station, and then the positioning error is analyzed. Finally, the feasibility and stability of the algorithm are verified through experiments. The experimental results show that the average positioning accuracy of the mobile base station is within 0.05m.Compared with the traditional manual measurement method, the base station self positioning method can effectively save the base station deployment time and reduce the workload.