Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm

Zhang，Fengyun1,2; Yang，Li3; Liu，Yuhuan1,2; Ding，Yulong1,2,4; Yang，Shuang Hua1,2; Li，Hao5

2022-06-01

10.3390/s22124353

SENSORS   Impact Factor & Quartile

1424-8220

Nowadays, accurate localization plays an essential role in many fields, such as target tracking and path planning. The challenges of indoor localization include inadequate localization accuracy, unreasonable anchor deployment in complex scenarios, lack of stability, and the high cost. So, the universal positioning technologies cannot meet the real application requirements scarcely. To overcome these shortcomings, a comprehensive ultra wide-band (UWB)-based real-time localization system (RTLS) is presented in this paper. We introduce the architecture of a real-time localization system, then propose a new wireless clock synchronization (WCS) scheme, and finally discuss the time difference of arrival (TDoA) algorithm. We define the time-base selection strategy for the TDoA algorithm, and we analyze the relationship between anchor deployment and positioning accuracy. The extended Kalman filter (EKF) method is presented for non-linear dynamic localization estimation, and it performs well in terms of stability and accuracy on moving targets.

extended Kalman filter (EKF) indoor localization time difference of arrival (TDoA) time-base selection strategy ultra wide-band (UWB) wireless clock synchronization (WCS)

SCI ; EI

English

First

National Natural Science Foundation of China[61873119];National Natural Science Foundation of China[92067109];

WOS:000816029600001

20222412216149

Indoor positioning systems ; Motion planning ; Target tracking ; Time difference of arrival ; Time of arrival ; Ultra-wideband (UWB)

Information Theory and Signal Processing:716.1 ; Radio Systems and Equipment:716.3

CHEMISTRY

2-s2.0-85131507049

Scopus

1.Shenzhen Key Laboratory of Safety and Security for Next Generation of Industrial Internet,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Computer Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Army Engineering University of PLA,Nanjing,210000,China
4.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
5.Science and Technology on Near-Surface Detection Laboratory,Wuxi,214000,China

Zhang，Fengyun,Yang，Li,Liu，Yuhuan,et al. Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm[J]. SENSORS,2022,22(12).

Zhang，Fengyun,Yang，Li,Liu，Yuhuan,Ding，Yulong,Yang，Shuang Hua,&Li，Hao.(2022).Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm.SENSORS,22(12).

Zhang，Fengyun,et al."Design and Implementation of Real-Time Localization System (RTLS) Based on UWB and TDoA Algorithm".SENSORS 22.12(2022).