| Autor: |
Sarkka, S., Viikari, V. V., Huusko, M., Jaakkola, K. |
| Zdroj: |
IEEE Sensors Journal; May2012, Vol. 12 Issue 5, p904-910, 7p |
| Abstrakt: |
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. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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