Phase-based UHF RFID tracking with nonlinear Kalman filtering and smoothing

S. Särkkä, Ville Viikari, Miika Huusko, Kaarle Jaakkola

Research output: Contribution to journalArticleScientificpeer-review

56 Citations (Scopus)

Abstract

In this paper, we present an UHF RFID location tracking system, which is based on measuring the phases of back scattered signals from RFID tag using multiple spatially distributed antennas at a single carrier frequency. The wavelength ambiguity of the phase measurements is resolved by using the extended Kalman filter (EKF) and the Rauch-Tung-Striebel (RTS) smoother, where the state includes the position, velocity and the phase offsets of antennas. The performance of the method is experimentally verified at 890 MHz using a commercially available RFID reader.
Original languageEnglish
Pages (from-to)904-910
Number of pages7
JournalIEEE Sensors Journal
Volume12
Issue number5
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

Radio frequency identification (RFID)
smoothing
antennas
carrier frequencies
Kalman filters
readers
ambiguity
Antennas
Phase measurement
Extended Kalman filters
wavelengths
Wavelength

Keywords

  • Extended Kalman filter
  • RFID
  • RTS smoother
  • tracking
  • transponders
  • wireless sensors

Cite this

Särkkä, S. ; Viikari, Ville ; Huusko, Miika ; Jaakkola, Kaarle. / Phase-based UHF RFID tracking with nonlinear Kalman filtering and smoothing. In: IEEE Sensors Journal. 2012 ; Vol. 12, No. 5. pp. 904-910.
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Phase-based UHF RFID tracking with nonlinear Kalman filtering and smoothing. / Särkkä, S.; Viikari, Ville; Huusko, Miika; Jaakkola, Kaarle.

In: IEEE Sensors Journal, Vol. 12, No. 5, 2012, p. 904-910.

Research output: Contribution to journalArticleScientificpeer-review

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