AN ALGORITHM TO SYNCHRONIZE THE TIME OF A COMPUTER TO UNIVERSAL TIME

被引：41

作者：

LEVINE, J

机构：

[1] Joint Institute for Laboratory Astrophysics, National Institute of Standards and Technology, University of Colorado, Boulder, CO

来源：

IEEE-ACM TRANSACTIONS ON NETWORKING | 1995年 / 3卷 / 01期

基金：

美国国家科学基金会;

关键词：

Clock oscillator - Computer time service - Dial up telephone access - Optimum time accuracy - Periodic calibration data - Time difference measurements - Uncertainty - Universal time;

D O I：

10.1109/90.365436

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

I describe 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.

引用

页码：42 / 50

页数：9