Roadside beacon system

Details Roadside beacon system Roadside beacon system

G - Physics

01

S

354/25, 343/81

G01S 1/14 (2006.01) G01S 1/68 (2006.01) G08G 1/13 (2006.01) G08G 1/133 (2006.01)

Patent

CA 1285051

ABSTRACT OF THE DISCLOSURE A navigator system for providing in a moving vehicle a display of the position of the vehicle on a map. This position is recalibrated by a roadside antenna that transmits a split beam so that the signal is a minimum directly in front of the antenna. The on-board navigator recalibrates the position from data transmitted immediately before when the received signal is abruptly decreased as the vehicle passes directly in front of the antenna.

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