Pulse radar apparatus

Details Pulse radar apparatus Pulse radar apparatus

1975-02-14

1976-09-07

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 172PC, G01S 9233, G01S 942

Patent

active

039797481

ABSTRACT:
A long-range pulse radar apparatus emitting linear F.M. pulses and coherently detecting radar returns contains a chirp generator with a phase-control unit, a slope-control unit and a timing circuit. The timing circuit, supplied with a voltage resulting from the phase detection of the VCO output signal with reference to the COHO signal, determines the times when the VCO phase control voltage is to be gradually replaced by the slope-control circuit output. The latter output is determined by the period required to generate a given number of periodic variations of the signals obtained through the phase detection of the VCO output signal with reference to a fixed-frequency signal.

REFERENCES:
patent: 3225349 (1965-12-01), Thor
patent: 3263227 (1966-07-01), Ferry et al.
patent: 3720950 (1973-03-01), Vehrs, Jr.
patent: 3905033 (1975-09-01), Moore et al.
patent: 3942035 (1976-03-01), Buss

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