研究了现有人员定位移动终端的发展现状及适用于人员移动定位终端的主流技术,针对现有移动定位终端在功耗和定位精度面临的问题,设计了一种具备差分定位功能的融合WIoTa及5G通信的移动定位终端。通过分析差分定位原理提出了一种将WIoTa AP与定位基准站融合的方法,消除了差分定位对额外电台或移动网络的依赖,基于WIoTa通信实现区域内差分数据的传输,并通过5G实现定位信息上云。本文基于UCM202、UM626N和RG200U等芯片实现了定位系统,并搭建了测试环境进行实地测试。测试结果表明,该系统在空旷环境下可达厘米级定位精度、在室内靠窗位置可达分米级定位精度,同时具有更小体积、更低功耗。

The current development status of the mobile terminal for personnel position and the mainstream technologies applicable to the mobile terminal for personnel position are studied.Aiming at the problems faced by the existing mobile position terminals in power consumption and position accuracy,a mobile position terminal with differential position function is proposed,which integrates WIoTa and 5G communication.Based on the analysis of the principle of differential positioning,a method of integrating WIoTa AP with positioning reference station is proposed,which eliminates the dependence of differential positioning on additional radio or mobile network,realizes the transmission of regional differential data based on WIoTa communication,and realizes the positioning information on the cloud by 5G.This paper realizes the positioning system based on UCM202,UM626N and RG200U chips,and sets up a test environment for field testing.The test results show that the system can reach centimeter-level positioning accuracy in open environment and decimeter level positioning accuracy in indoor window.At the same time,the system has smaller volume and lower power consumption.