电力信息与通信技术2024，Vol.22Issue(4)：92-98,7.DOI:10.16543/j.2095-641x.electric.power.ict.2024.04.11
基于5G波束成形的变电站作业人员高精度定位技术
High-precision Positioning Technology for Substation Operators Based on 5G Beamforming
摘要
Abstract
To address the issue of poor positioning accuracy for indoor substation operators,this paper proposes a 5G millimeter-wave high-precision indoor positioning system,assisted by multiple intelligent reflecting surfaces(IRS).Firstly,using maximum likelihood estimation and a 3D indoor positioning model,an initial estimate of the operator's position was obtained,and the closed-form expression of the Cramér-Rao lower bound(CRLB)was derived.Then,aiming to minimize the CRLB,an optimization model was formulated for the optimal IRS reflection beamforming and the receiving beamforming at the operator's side terminal.Finally,an alternating beamforming optimization algorithm,based on block coordinate descent(BCD)and particle swarm optimization(PSO),was proposed to determine the optimal reflection and reception beamforming,thereby enhancing operator positioning accuracy.Simulation results demonstrate the effectiveness of this strategy in improving system positioning accuracy.关键词
变电站室内定位/5G毫米波/智能反射面/克拉美罗界/波束成形Key words
substation indoor positioning/5G millimeter wave/intelligent reflecting surface/Cramer-Rao bound/beamforming分类
电子信息工程引用本文复制引用
俞家融,杨静泊,林俊杰,华梁,闵捷,饶建东..基于5G波束成形的变电站作业人员高精度定位技术[J].电力信息与通信技术,2024,22(4):92-98,7.基金项目
广盈集团 2022 年科技项目资助"变电站内基于 5G 室分的北斗定位技术研究"(GYKJ202202). （GYKJ202202）
