Airborne target recognition system

Details Airborne target recognition system Airborne target recognition system

1973-10-19

1976-08-24

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 74, G01S 916

Patent

active

039769992

ABSTRACT:
In a radar target acquisition system means are provided for analyzing the video return including an automatic gate circuit causing the range gate to sweep out, and to sequentially sample the video return; a filter acquisition video processing circuit including means for discriminating between random and sinusoidal amplitude modulation appearing on the video return and having known frequency characteristics equal to the scan and pulse repetition frequencies of the radar within the pass band of the filter circuit, and means for comparing the discriminated amplitude modulated video return signal to at least one established threshold; and a track circuit which remains de-activated during the sweeping mode and is activated upon command from the filter acquisition circuit. Means are provided for manually initiating the gate circuit and for inhibiting the track circuit to await response from the filter acquisition circuit.

REFERENCES:
patent: 3419867 (1968-12-01), Pifer
patent: 3445663 (1969-05-01), Jones et al.
patent: 3522604 (1970-08-01), Gillmer et al.
patent: 3805267 (1974-04-01), Gerard

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