UHF RFID Indoor Positioning System With Phase Interference Model Based on Double Tag Array

Yanhan Zeng; Xiheng Chen; Ruguo Li; Hong-Zhou Tan

doi:10.1109/ACCESS.2019.2921560

IEEE Access (Jan 2019)

UHF RFID Indoor Positioning System With Phase Interference Model Based on Double Tag Array

Yanhan Zeng,
Xiheng Chen,
Ruguo Li,
Hong-Zhou Tan

Affiliations

Yanhan Zeng: ORCiD; School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, China
Xiheng Chen: School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China
Ruguo Li: School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, China
Hong-Zhou Tan: School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China

DOI: https://doi.org/10.1109/ACCESS.2019.2921560
Journal volume & issue: Vol. 7
pp. 76768 – 76778

Abstract

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A UHF radio-frequency identification (RFID) indoor positioning system based on phase difference is presented in this paper. An additional auxiliary tag and the target tag make up a double tag array to eliminate the phase ambiguity. To quantify the phase offset caused by the interference between tags, a mathematical model is built. Based on the double tag array and the interference model, a hyperbolic positioning algorithm, combining the genetic algorithm, is implemented to improve the positioning accuracy. Compared with other RFID positioning systems, the proposed system achieves a better positioning accuracy of 0.2217 m.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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