Orientation-Aware RFID-Based Sensing

Commodity passive RFID system has been widely used for sensing, localization, gesture recognition and tracking due to its low cost and ubiquity. However, the orientation of RFID tag’s body to the reader’s directional antenna could significantly affect the sensing performance. In this paper, we will theoretically analyse the impact of orientation in RFID-based sensing. Then, we will propose a signal ratio based algorithm to mitigate the impact of orientation in RFID-based sensing.