Volumetric balance video tracker

Details Volumetric balance video tracker Volumetric balance video tracker

1976-10-22

1977-11-29

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250203CT, H04N 718

Patent

active

040608301

ABSTRACT:
A video tracker for controlling the scanning of a sensor in an electro-optical tracking system in which the track point for the sensor is determined by balancing a volume signal from a first half of the track window with a volume signal from the second half of the track window in both horizontal and vertical directions of the track window to provide azimuth and elevation error signals. The volume signal for each half of the track window is determined by the product of the area of the corresponding half of the track window and the amplitude of the average linear video signal within that portion of the track window. Further, a multiplexed, time domain multiplier compares the gain of the azimuth and elevation error signals in successive fields of the sensor to normalize the gain of the azimuth and elevation error signals with respect to the displacement of the volumetric centroid of the target from the center of the track window.

REFERENCES:
patent: 3562423 (1971-02-01), Murphy
patent: 3950611 (1976-04-01), Callis
patent: 3953670 (1976-04-01), Prince

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