Short range position locating system for transponder

Details Short range position locating system for transponder Short range position locating system for transponder

G - Physics

01

S

G01S 11/06 (2006.01) G01S 13/87 (2006.01) G08G 1/01 (2006.01) H01Q 3/24 (2006.01) H01Q 3/40 (2006.01) H01Q 25/00 (2006.01)

Patent

CA 2263772

In order to locate a transponder in a roadway there are first and second antenna arrays at spaced locations. Each array is associated with a switching control which causes the array beam to step through a series of beams. The signal developed in each beam is converted to a digital result. The strongest beam from each array may be determined and the location of the transponder at the intersection of the two strongest beams.

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