Accession Number : AD0164884
Title : Centroid Tracker.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Fraser,John W.
Report Date : 09 APR 1974
Pagination or Media Count : 5
Abstract : The patent describes a centroid generator that computes X and Y centroids. Instantaneous values of X and Y are multiplied by instantaneous values of intensity and periodically integrated and divided by integrated values of intensity during the same interval. To synchronize the generator to compute a centroid at the end of each scan the Y input is differentiated, fed to a zero crossing detector, and then to a circuit that has an output with the same polarity regardless of the input polarity. This signal is fed to a single shot which forms the sample pulse. Another single shot generates the reset pulse.
Descriptors : *Signal generators, *Patents, Circuits
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE