基于UWB-PDOA的少基站自适应定位系统研究  

UWB-PDOA Based Adaptive Positioning System with Few Base Stations

作　　者：黄鑫 张成炜 韦周旺 江灏[2] HUANG Xin;ZHANG Chengwei;WEI Zhouwang;JIANG Hao(State Grid Fujian Electric Power Co.,Ltd.,Economic and Technological Research Institute,Fuzhou 350013,China;College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]国网福建省电力有限公司经济技术研究院,福建福州350013 [2]福州大学电气工程与自动化学院,福建福州350108

出　　处：《测控技术》2024年第5期85-92,共8页Measurement & Control Technology

基　　金：国网福建省电力有限公司经济技术研究院科研项目(B3130N22001L)。

摘　　要：超宽带(Ultra-Wideband,UWB)技术在室内外定位中应用广泛,针对传统多基站定位方案的局限性,提出了一种基于超宽带信号到达相位差(Ultra-Wideband Phase Difference of Arrival,UWB-PDOA)的少基站自适应定位系统。该系统利用UWB-PDOA技术和基于ESP32信号强度的权重自适应定位技术,大幅降低了对环境部署的依赖性,提高了定位的精度和稳定性。结合环境先验信息和目标高度的先验知识,构建了先验知识库,采用自适应定位技术,利用多个传感器的信息来调整对不同定位基站的置信度权重,进一步提高了定位精度和鲁棒性。实验结果表明,所提出的系统在视距(Line of Sight,LOS)和非视距(Non Line of Sight,NLOS)环境下都具有较高的定位精度和稳定性,并且仅需要不超过3个基站便可以满足室内环境定位的需求。Ultra-wideband(UWB)technology is widely used in indoor and outdoor positioning.In order to ad-dress the limitations of traditional multi-base stations positioning schemes,a few base stations adaptive positio-ning system based on ultra-wideband phase difference of arrival(UWB-PDOA)is proposed.The system utilizes UWB-PDOA technology and a weight adaptive positioning technology based on ESP32 signal strength to signifi-cantly reduce the system reliance on environmental deployment and improve positioning accuracy and stability.By combining environmental prior information and prior knowledge of the target height,a complete prior knowl-edge base is constructed,and an adaptive positioning technology is used to adjust the confidence weight of dif-ferent positioning base stations using information from multiple sensors,further improving positioning accuracy and robustness.Experimental results show that the proposed system has high positioning accuracy and stability in both line of sight(LOS)and non line of sight(NLOS)environments,and requires no more than three base stations to meet the requirements of indoor environment positioning.

关 键 词：UWB-PDOA 少基站定位 信号强度 自适应 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]