A system, method and server for locating and identifying a tag

摘要

Each RID tag emits an rf electromagnetic signal in response to movement of the tag using a conductive plate, groundplate and electrets. A plurality of receivers provide data to a server that processes the data to determine tag location by time difference of arrival (TDOA), compares this with information concerning the known previous location of the tag and the most probable tag identity is determined corresponding with the known location. Speed may also be determined and used to predict location information for specific tags.