仓储场景中基于无线标签的三维定位方法  

3-D Localization Method Based on Wireless Tags in Warehouse Scenarios

作　　者：刘凯凯 田增山[1] 李泽[2] 万晓榆[3] LIU Kaikai;TIAN Zengshan;LI Ze;WAN Xiaoyu(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Key Laboratory of Industrial Internet of Things&Networked Control,Ministry of Education,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Economics and Management,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学工业物联网与网络化控制教育部重点实验室,重庆400065 [3]重庆邮电大学经济管理学院,重庆400065

出　　处：《电子与信息学报》2023年第12期4218-4227,共10页Journal of Electronics & Information Technology

基　　金：重庆市教委科学技术研究项目(KJQN202100647)。

摘　　要：仓储行业在面向智能化发展中面临因无法获取物资的室内位置信息而导致出库、入库难等问题,为实现对物资准确定位,该文提出一种基于无线标签的目标3维定位方法。设计的无线标签安置在待定位物资上,将来自发射机正交频分复用(OFDM)信号反射到具有均匀面阵(UPA)天线阵列的接收机,进行多通道的信道估计后,利用分步的稀疏恢复算法实现高维无线信道参数估计,并结合发射机、标签和接收机的空间几何位置,建立标签位置的优化问题,最后采用群智能算法搜索得到目标准确的3维位置。为验证系统,实现了标签及收发机原型,实测结果表明,目标的中值3维定位精度达到0.53 m。The warehousing industry is striding forward in the direction of intelligence.Still,the challenges of in-storage and out-storage,caused by the lack of location information of goods indoors,hinder it.To achieve accurate localization of goods,a 3-D localization method based on wireless tags is proposed.The designed tags are mounted on the goods,reflecting the Orthogonal Frequency Division Multiplexing(OFDM)signals from the transmitter.The receiver with a Uniform Planar Array(UPA)as receiving antenna receives the signals and gets the channel estimates on multiple antenna channels.Then,the multi-dimensional wireless channel parameters are obtained using the two-step sparse recovery algorithm.An optimization problem for solving the unknown tags'locations is built according to the geometric locations of the receiver,transmitter,and tags in 3-D space.Finally,the swarm intelligence method is utilized to search accurately the tags'locations.The tag prototype,OFDM transmitter,and receiver are realized to validate the system based on the proposed scheme.Experimental results demonstrate that the system can achieve a 3-D median accuracy of 0.53 m.

关 键 词：室内3维定位 无线标签 均匀面阵 稀疏恢复 群智能 

分 类 号：TN92[电子电信—通信与信息系统]