基于单基站的矩形隧道车辆定位方法  

Rectangular Tunnel Vehicle Positioning Method Based on Single Base Station

作　　者：姜苏英 李素雅 JIANG Suying;LI Suya(School of Electronic&Electrical Engineering,Baoji University of Arts and Sciences,Baoji 721013,China;Upper and Middle Reaches of the Yellow River Administrative Bureau of Yellow River Conservancy Commission,Xi’an 710021,China)

机构地区：[1]宝鸡文理学院,电子电气工程学院,陕西宝鸡721013 [2]黄河水利委员会黄河上中游管理局,陕西西安710021

出　　处：《微型电脑应用》2024年第12期42-45,50,共5页Microcomputer Applications

基　　金：陕西省教育厅科研计划项目(22JK0248)。

摘　　要：针对卫星导航定位方法在隧道内很难准确实现车辆定位的问题,提出一种基于单基站(BS)的矩形隧道车辆定位方法。结合隧道壁的结构特点,建立虚拟基站;考虑来自隧道壁的单次反射路径,根据来自定位基站和虚拟基站的各个路径的到达时间(TOA)信息建立定位模型;利用两步加权最小二乘(TSWLS)法求解目标函数,从而获得隧道内车辆的精确位置。仿真结果表明:提出方法可有效地实现隧道内车辆的定位,并且具有较高的定位精度;采用基于TSWLS法的单基站定位方法对目标车辆进行定位时,其定位精度优于传统的基于加权最小二乘法的单基站定位方法。Aimed at the problem that the existed satellite navigation positioning method is difficult to achieve accurate vehicle positioning in the tunnel environment,a tunnel vehicle positioning method based on single base station(BS)for the rectangular tunnel environment is proposed.The virtual BS is established according to the structural characteristics of the tunnel walls.By considering the single reflection paths from the tunnel walls,a positioning model is established according to the Time of Arrival(TOA)information of each path from the positioning BS and the virtual BS.The two step weighted least squares(TSWLS)method is used to solve the objective function to obtain the precise positioning of the vehicle in the tunnel.The simulation results show that the proposed method can effectively achieve vehicle positioning in the tunnel,and has higher positioning accuracy.When the single BS positioning method based on TSWLS method is used to locate the target vehicle,its positioning accuracy is better than that of the traditional single BS positioning method based on weighted least squares method.

关 键 词：单基站 隧道 两步加权最小二乘法 虚拟基站 

分 类 号：TD655.3[矿业工程—矿山机电]