Patent ID: 8723648
Filing Date: 2014-05-13
Classification: G01S

Abstract:
1. A system for determining a location of a radio frequency identification (RFID) reader, the system comprising: a plurality of transmitters having known reference points, each transmitter comprising a simulation circuit for transmitting a sequence of unique RFID pseudo tag signals, each unique RFID pseudo tag signal in the sequence having a unique range of transmission, each unique RFID pseudo tag signal in the sequence comprising a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter transmitting the pseudo tag signal; an RFID reader for receiving a plurality of sequences of the unique RFID pseudo tag signals from the plurality of transmitters, and distinguishing between each unique RFID pseudo tag signal received; and a location calculator for calculating the location of the RFID reader based on the range of transmission received from the plurality of the received tag identifications and based on the plurality of the received transmitter identification values.