Rough video from RFID Journal Live showing how Ubisense can do real time tracking indoors to an accuracy of about 6" / 15cm. This demo uses just two sensors - we can do this as we use Angle of Arrival (AOA) as well as Time Difference of Arrival (TDOA). A TDOA only system needs 4 sensors to calculate a 3D location. Our trains Thomas and Molly were a big hit at the show :).
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