电讯技术2025，Vol.65Issue(5)：784-792,9.DOI:10.20079/j.issn.1001-893x.240228004
分布式RIS透射阵列辅助的近场定位
Near-field Positioning Assisted by Distributed RIS Transmissive Arrays
摘要
Abstract
In the current context of the"Internet of Everything",high-precision positioning technology is the basis of many applications and development,and it is also an important research direction of integrated sensing and communication(ISAC)technology.Therefore,it is considered to combine reconfigurable intelligent surface(RIS)technology as a transmission array in the positioning model.With the help of RISs,the target source can be estimated.At the same time,the single RIS transmission array model is extended to the distributed array model composed of two RISs,and the signal model,channel model and system model are constructed.The influence of different signal transmitting power and different array number on RIS positioning performance with transmission array is evaluated,and a geometric positioning algorithm with the shortest distance of different plane lines is proposed to simulate the target source position.The simulation results show that the positioning effect of the proposed distributed RIS as a transmission array-assisted positioning model and algorithm is better than that of the single array model in the existing studies.The average positioning error of the single position in the simulation is reduced by about 70％,and the position solving time is about 25％of the time of the single array model.关键词
位置估计/近场定位/可重构智能表面(RIS)/透射阵列/分布式阵列Key words
location estimation/near-field positioning/reconfigurable intelligent surface(RIS)/transmission array/distributed array分类
信息技术与安全科学引用本文复制引用
王丹,许鑫,王嘉程,刘祚..分布式RIS透射阵列辅助的近场定位[J].电讯技术,2025,65(5):784-792,9.基金项目
重庆市自然科学基金创新发展联合基金(中国星网)(CSTB2023NSCQ-LZX0114) （中国星网）
