Accurate indoor positioning technique using RSSI assisted inertial measurement

Abstract An indoor positioning technique based on the inertial measurement of the object and the received signal strength indicator (RSSI) measured from an active RFID tag placed on the object is presented. The inertial measurement complements the inaccuracy of the RSSI measurements, especially when the object is far away from RFID reader. Correspondingly, a strong RSSI reading when the object is near a RFID reader provides accurate information about the location of the object. This information could then be used to amend the position estimated from the inertial measurement. Experiment has shown that the proposed technique provides better positioning accuracy