Doppler speedometer

Details Doppler speedometer Doppler speedometer

1976-05-11

1977-12-27

Farley, Richard A.

Communications: electrical

Selective

Monitoring in addition to control

343 8, G01S 966

Patent

active

040657450

ABSTRACT:
A Doppler Speedometer for determining the speed of a vehicle, suspended in a medium, relative to the ground over which the vehicle is traveling. Radiant energy is beamed from the vehicle toward the ground at a predetermined angle with respect to the direction of travel of the vehicle. The reflected energy is received and a signal representing the envelope of the amplitude modulation function of the returned energy is generated. An output voltage having a value proportional to some characteristics of the frequency spectrum of the return signal is generated for driving a meter calibrated in vehicle speed.

REFERENCES:
patent: 3065463 (1962-11-01), Turner
patent: 3094693 (1963-06-01), Taylor
patent: 3437987 (1969-04-01), Burg
patent: 3525976 (1970-08-01), Wilcox et al.

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