Vehicle speedometer

Details Vehicle speedometer Vehicle speedometer

1985-11-13

1987-08-25

Tubbesing, T. H.

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

Determining velocity

With plural beams

367 91, G01S 966

Patent

active

046896244

ABSTRACT:
A vehicle speedometer is disclosed which accurately measures vehicle velocity despite significant vehicle vibration, which causes variation of the angle of incidence of the measuring wave. Two transceivers are mounted on the vehicle, along with means to determine a frequency difference and an angle variation, both being used in an accurate velocity determination.

REFERENCES:
patent: 3833906 (1974-09-01), Augustine
patent: 3859660 (1975-01-01), Augustine et al.
patent: 3918058 (1975-11-01), Noyori et al.
patent: 4050071 (1977-09-01), Clorfeine
patent: 4107680 (1978-08-01), Kaplan
patent: 4176352 (1979-11-01), Tyler
patent: 4414548 (1983-11-01), Carpenter et al.
patent: 4506353 (1985-03-01), Rott et al.

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