Accession Number : ADD006717

Title :   Pulse Repetition Frequency Tracker.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Wise ,Carl D ; Wiegand,Richard J

Report Date : 02 Oct 1979

Pagination or Media Count : 5

Abstract : The repetition frequency tracking apparatus utilizes the input signal to start a timer to provide the correct phase. When the timer sweeps through the right frequency, the tracker will lock to a single pulse train within a two octave frequency spectrum. After the lockup, the tracker is switched to a free running mode to provide pseudo synchronous running through durations of missing input pulses. Accurate tracking is provided by the use of an early late gate phase discriminator for phase sensing and correcting to zero, errors at all locking frequencies. (Author)

Descriptors :   *Patents, *Pulse rate, *Automatic tracking, Signals, Timing circuits, Frequency, Phase, Acquisition, Pulse trains, Locking(Electronics), Synchronization(Electronics)

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE