Localization and Tracking of Passive RFID Tags Based on Direction Estimation

Radio frequency identification (RFID) is poised for growth as businesses and governments explore applications implementing RFID. The RFID technology will continue to evolve to meet new demands for human and target location and tracking. In particular, there are increasing needs to locate and track multiple RFID-tagged items that are closely spaced. As a result, localization and tracking techniques with higher accuracy yet low implementation complexity are required. This paper examines the applicability of direction-of-arrival (DOA) estimation methods to the localization and tracking problems of passive RFID tags. Different scenarios of stationary and moving targets are considered. It is shown through performance analysis and simulation results that simple DOA estimation methods can be used to provide satisfactory localization performance.

[1]  Jing Wang,et al.  Signal and array processing techniques for RFID readers , 2006, SPIE Defense + Commercial Sensing.

[2]  Petre Stoica,et al.  MUSIC, maximum likelihood and Cramer-Rao bound , 1988, ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing.

[3]  Daniel M. Dobkin,et al.  The RF in RFID: Passive UHF RFID in Practice , 2007 .

[4]  Yimin Zhang,et al.  Range and DOA estimation of polarized near-field signals using fourth-order statistics , 2004, 2004 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[5]  Yifeng Han,et al.  System Modeling and Simulation of RFID , 2005 .

[6]  Wolfram Burgard,et al.  Mapping and localization with RFID technology , 2004, IEEE International Conference on Robotics and Automation, 2004. Proceedings. ICRA '04. 2004.

[7]  Yunhao Liu,et al.  LANDMARC: Indoor Location Sensing Using Active RFID , 2004, Proceedings of the First IEEE International Conference on Pervasive Computing and Communications, 2003. (PerCom 2003)..

[8]  Petre Stoica,et al.  MUSIC, maximum likelihood and Cramer-Rao bound: further results and comparisons , 1989, International Conference on Acoustics, Speech, and Signal Processing,.