Vehicle identification system

Details Vehicle identification system Vehicle identification system

1979-12-19

1982-07-13

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 8, G01S 1378, G01S 1358

Patent

active

043397530

ABSTRACT:
A vehicle identification system includes apparatus located on the vehicle for transmitting a continuous wave RF probe signal, a remote interrogator unit responsive to the probe signal for transmitting back thereto an interrogation signal. The apparatus on the vehicle transmits in response to the interrogation signal an identifying code. The probe signal may be further utilized in determining the speed of the vehicle.

REFERENCES:
patent: 3918057 (1975-11-01), Van Tol
patent: 4012736 (1977-03-01), Angwin
patent: 4038653 (1977-07-01), Brewster
patent: 4104630 (1978-08-01), Chasek
patent: 4114151 (1978-09-01), Denne et al.
patent: 4128835 (1978-12-01), Russell
patent: 4231039 (1980-10-01), Fritzlen et al.

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