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Lookup NU author(s): Aobo Zhao, Professor Gui Yun TianORCiD, Dr Jun Zhang
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2017Radio frequency identification (RFID) sensor systems have unique advantages of identification, communication and sensing together. Previous researches on RFID based sensing investigate power based features, and face the challenges of low sensitivity and robustness due to environment RF field. In this paper, rather than using received signal strength indicator (RSSI), we present a method using features of transient responses from in-phase quadrature (IQ) signal to overcome the challenges of sensitivity and robustness in ultra-high frequency (UHF) RFID sensor systems. The transient responses of the IQ signal are analysed using skewness feature for different defects. The experimental results show that IQ based skewness features from IQ signal improve sensitivity and robustness for defect characterisation compared with previous RSSI and RCS methods.
Author(s): Zhao A, Tian GY, Zhang J
Publication type: Article
Publication status: Published
Journal: Sensors and Actuators A: Physical
Year: 2018
Volume: 269
Pages: 14-21
Print publication date: 01/01/2018
Online publication date: 07/11/2017
Acceptance date: 06/11/2017
Date deposited: 17/01/2018
ISSN (print): 0924-4247
ISSN (electronic): 1873-3069
Publisher: Elsevier BV
URL: https://doi.org/10.1016/j.sna.2017.11.008
DOI: 10.1016/j.sna.2017.11.008
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