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2010 IEEE International Conference on RFID (IEEE RFID 2010)
In this paper, we give an overview of spatial identification (determining position and velocity) of modulated backscatter UHF RFID tags using RF phase information. We describe three main techniques based on PDOA (Phase Difference of Arrival): TD (Time Domain), FD (Frequency Domain), and SD (Spatial Domain). The techniques are illustrated with modeling and simulation example in free space and in presence of multipath using a multi-ray channel model for amplitude and phase of the received tagdoi:10.1109/rfid.2010.5467253 fatcat:q5aumgikhvfe7ldw4ljw7xd7de