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