Digital data processor

Communications: directive radio wave systems and devices (e.g. – With particular circuit – Digital processing

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Details

342 19, 342 92, 342 95, 342197, G01S 734

Patent

active

055722156

ABSTRACT:
A plurality of threshold detectors is provided to pass analog signals of predetermined and varying threshold values. An analog to digital converter converts these analog signals to binary 1s and 0s. A target detected on each radar beam sweep is a 1 and no target is a 0. These binary numbers are then stored in a reversible up-down counter. At the first signal received, the counter counts up on hits (binary 1) and counts down on misses (binary 0). When the contents of the counter reaches a predetermined count, a target's leading edge is declared. At this time, the counter is then reset and proceeds to count up on misses and down on hits until the aforesaid predetermined count is attained, wherein a trailing edge is then declared.

REFERENCES:
patent: 3391403 (1968-07-01), Phillips, Jr.
patent: 3392305 (1968-07-01), Andersson et al.
patent: 3392386 (1968-07-01), Evans et al.
patent: 3399404 (1968-08-01), Githens et al.
patent: 3460137 (1969-08-01), Ralston
patent: 3521277 (1970-07-01), Evans

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