Accession Number : ADD003286

Title :   Time and Frequency Control Unit.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Bates,Alvin G ; McGovern,Terrence L

Report Date : 10 Aug 1976

Pagination or Media Count : 9

Abstract : The patent provides apparatus which can be used on-board a satellite to correct long-term crystal oscillator frequency drift. Typical high quality crystal oscillator drift, the drift being on the order of 1 part per 10 to the minus 10 power per day or less. The patent corrects for this drift by establishing a drift rate based on the drift history. The patent also functions as a frequency translator to offset the frequency of oscillation of the source signal by a predetermined amount. The invention also removes any frequency bias in source signal.

Descriptors :   *Frequency stabilizers, *Patents, Crystal oscillators, Frequency shift, Corrections, Spaceborne, Spacecraft components

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE