RF system for tracking objects

Details RF system for tracking objects RF system for tracking objects

2007-12-17

2009-11-03

Gregory, Bernarr E (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Triangulation

C342S042000, C342S043000, C342S118000, C342S125000, C342S146000, C342S147000, C342S165000, C342S173000, C342S175000, C342S195000, C342S450000, C342S451000, C600S407000, C600S424000

Reexamination Certificate

active

07612708

ABSTRACT:
A system for tracking an object in space for position, comprises a transponder device connectable to the object. The transponder device has one or several transponder aerial(s) and a transponder circuit connected to the transponder aerial for receiving an RF signal through the transponder aerial. The transponder device adds a known delay to the RF signal thereby producing an RF response for transmitting through the transponder aerial. A transmitter is connected to a first aerial for transmitting the RF signal through a first aerial. A receiver is connected to the first, a second and third aerials for receiving the RF response of the transponder device therethrough. A position calculator is associated to the transmitter and the receiver for calculating a position of the object as a function of the known delay and the time period between the emission of the RF signal and the reception of the RF response from the first, second and third aerials. A method is also provided.

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