超宽带测距模块的快速迭代校准方法  

Fast iterative calibration method for UWB ranging module

作　　者：田哥宇 刘瑜[1] 邹振超 黄鑫 TIAN Geyu;LIU Yu;ZOU Zhenchao;HUANG Xin(Faculty of Mechanical Engineering&Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学机械与自动控制学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2021年第3期373-378,共6页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省公益技术研究项目(LGG20F030007)。

摘　　要：为了高效地校准超宽带收发模块中的天线延时,提升超宽带定位系统的定位精度,提出了一种迭代寻优的校准方法。以三个模块两两之间测距误差平方和作为评价一组天线延时的标准,每次迭代测试少量候选天线延时,筛选出其中较优的部分,产生新的待测天线延时组合,并在多次迭代过程中使较优部分不断向最优天线延时组合逼近。在15~30 m的范围内进行对比试验,测试了校准结果测距精度,结果表明:经过2 h的迭代校准后,天线延时的误差小于超宽带收发模块厂商所提供计算方法得到的校准结果。该方法实用性强,实施简单,适用于没有标准模块的情况下对多个超宽带收发模块进行校准。To calibrate the antenna delay in the UWB-based transceiver module efficiently, and enhance the positioning accuracy of the UWB positioning system, we proposed a calibration method of iterative optimization. The quadratic sum of ranging errors between every two of three modules was used to evaluate a combination of antenna delays. A few candidate antenna delays were tested in each iteration test, and the better ones were selected to generate a new candidate combination of antenna delays. The better ones kept approaching the optimal combination of antenna delays during multiple iterations. The calibrated combination of antenna delay was tested within the range of 15 m to 30 m. The results indicated that after 2 h of iterative calibration, the antenna delay error was less than the calibration result obtained by the calculation method offered by the UWB transceiver module manufacturer. This method is practical and easy to implement, which can be used to calibrate multiple UWB transceiver modules without standard modules.

关 键 词：超宽带 定位 校准 天线 测距 

分 类 号：TN839[电子电信—信息与通信工程]