Optical identification friend-or-foe

Details Optical identification friend-or-foe Optical identification friend-or-foe

G - Physics

01

S

G01S 17/02 (2006.01) G01S 17/74 (2006.01) H04B 10/26 (2006.01)

Patent

CA 2055198

ABSTRACT An identification friend-or-foe system for vehicles wherein each vehicle is provided with a radiation transmitter and a receiver with a detector for detecting radiation transmitted by other vehicles. Each transmitter can transmit a first coded signal which can be detected by the receivers in other vehicles, the receivers providing an unblocking signal after the first coded signal is correctly identified. The unblocking signal clears a radiation transmission path in the vehicle, the path containing a reflector which reflects the received signal back to the source of the transmission. The reflector adds a further predetermined code to the signal reflected from the reflector with each vehicle having another detector for detecting a reflected signal and a device to identify the further predetermined code.

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