Split gate tracker using bipolar converter

Details Split gate tracker using bipolar converter Split gate tracker using bipolar converter

1975-12-17

1977-08-09

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 916

Patent

active

040414850

ABSTRACT:
A split gate radar pulse tracking circuit employs sequential and contiguously generated early and late gate sampling pulses for sampling a radar video signal containing a target pulse to be tracked in range. The video signal is fed into a first (X) input port of an integrated circuit multiplier and the early and late gate pulses are fed into the positive and negative terminals of the second (Y) multiplier input port. The gain networks of the multiplier are set so that when the early and late gate pulses are not present, the gain of the Y channel is 0 and the multiplier output is also 0. When a sampling pulse is present, the gain of the Y channel is 1 and the multiplier output is a replica of the video input. Because the early and late gate pulses are fed to positive and negative multiplier inputs, presentation of the late gate pulse reverses the polarity at the multiplier output. The latter is fed to an integrating amplifier which has its output fed back to control the time of occurrence of the early and late gate pulses whereby the timing of the early and late gate pulses is servoed to track the target pulse. The output of the integrating amplifier represents the range of the target pulse.

REFERENCES:
patent: 2577536 (1951-12-01), MacNichol, Jr.
patent: 3078457 (1963-02-01), Himler et al.
patent: 3648286 (1972-03-01), Schoneborn
patent: 3778827 (1973-12-01), Strenglein
patent: 3879730 (1975-04-01), Arsem
patent: 3962703 (1976-06-01), Collot et al.
Training Manual, "XM163,20MM Antiaircraft System (SP), Fire Control Operation and Maintenance (vol. 1)", General Electric, Burlington, Vermont, May 31, 1967, pp. 5-68 thru 5-88 & FIGS. 5-22 through 5-26, FIGS. 5-131, FIGS. 6-5-10.

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