Automatic frequency control system

Details Automatic frequency control system Automatic frequency control system

1974-07-10

1976-02-10

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 702

Patent

active

039381480

ABSTRACT:
An automatic frequency control system that is particularly suited for use th an aircraft launched radar controlled guided missile. The missile automatic frequency control system is made entirely of solid state devices including a voltage tuned solid state oscillator. The system employs a search mode of operation and two lock modes of operation. The search mode of operation occurs prior to missile launch when the aircraft radar and the missile control system are both scanning for a target and the reflected signal from the target has not been received by the missile control system. The two lock modes of operation are false lock and real lock. False lock occurs when the missile receives a false signal from the doppler radar of a nearby aircraft, for example. Real lock occurs during missile free flight when the missile receives a reflected radar signal from the target.

REFERENCES:
patent: 3212083 (1965-10-01), Hinchman
patent: 3394371 (1968-07-01), Mahler

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