基于LabVIEW的UWB定位系统的优化及应用

Optimization and Application of UWB Positioning System Based on LabVIEW

由于室内环境的复杂化及障碍物的增多导致了多径效应普遍发生,导致UWB定位的准确性,稳定性和连续性都有所下降。通过TWR测距的双边双向技术进行标签与基站的距离计算,并采用三边测量法进行坐标的位置计算,利用LabVIEW编程软件平台编写测距定位优化系统,对计算出来的坐标数据结果进行平均值计算,以达到所计算的坐标位置数据较原数据相比更加稳定且精确。并在具有四个UWB定位基站和多个标签的仓库环境中进行现场实验,检验优化后结果与实际值之间的误差度,验证了经过优化系统后标签坐标数据的稳定性。

Due to the complexity of the indoor environment and the increase of obstacles,multipath effects generally occur,resulting in a decrease in the accuracy,stability and continuity of UWB positioning.Calculate the distance between the tag and the base sta⁃tion through the bilateral two-way technology of TWR ranging,and use the trilateral measurement method to calculate the position of the coordinate,use the LabVIEW programming software platform to write the distance measurement positioning optimization sys⁃tem,and average the calculated coordinate data results Calculate so that the calculated coordinate position data is more stable and accurate than the original data.In addition,field experiments were conducted in a warehouse environment with four UWB position⁃ing base stations and multiple tags to verify the degree of error between the optimized results and the actual values,which verified the stability of the tag coordinate data after the optimized system.