An algorithm to synchronize the time of a computer to universal time

Author

Levine, Judah

Author_Institution

Joint Inst. for Lab. Astrophys., Colorado Univ., Boulder, CO, USA

Volume

3

Issue

1

fYear

1995

fDate

2/1/1995 12:00:00 AM

Firstpage

42

Lastpage

50

Abstract

Describes an algorithm that synchronizes the time of a computer clock to UTC with an uncertainty due to all causes of about 1 ms RMS. The method uses periodic calibration data obtained via dial-up telephone access to the NIST automated computer time service. The interval between calibrations can be chosen to provide optimum time accuracy or reduced accuracy at reduced cost based on a preliminary evaluation of the statistical performance of the clock. The computer can serve as a primary network time server or can be used stand-alone whenever precise time-stamps are required

Keywords

calibration; clocks; synchronisation; NIST automated computer time service; computer clock; computer time; dial-up telephone access; periodic calibration data; primary network time server; statistical performance; time accuracy; time synchronisation; uncertainty; universal time; Calibration; Clocks; Computer networks; Extraterrestrial measurements; Frequency estimation; Frequency synchronization; NIST; Network servers; Telephony; Time measurement;

fLanguage

English

Journal_Title

Networking, IEEE/ACM Transactions on

Publisher

ieee

ISSN

1063-6692

Type

jour

DOI

10.1109/90.365436

Filename

365436