National_Catalogues: Comparison of Time Scales Generated with the NBS Ensembling Algorithm
Title:
Comparison of Time Scales Generated with the NBS Ensembling Algorithm
Identifier:
ADA500878
STOAbstractExternal:
The National Bureau of Standards (NBS), Boulder, Colorado, uses an algorithm which generates UTC(NBS) from its ensemble of clocks and automatically, optimally, and dynamically weights each clock in the ensemble. The same algorithm was used at the Master Control Station (MCS) of the Global Positioning System (GPS) to generate time scale from a small ensemble of cesium clocks. Time transfer employing the GPS common view technique between NBS (Boulder) and MCS (Colorado Springs) was used to evaluate the stability of the MCS ensemble relative to UTC (NBS). The results demonstrate the power of the NBS algorithm in providing a stable time scale from a small ensemble of clocks. The resulting scale is, in principle, more stable than the best clock and a poor clock need not degrade the ensemble.
STOAuthorExternal:
DEFENSE MAPING AGENCY FALCON AIR FORCE BASE COLORADO SPRINGS CO Varnum, Fran B., Brown, Donald R., Allan, David W., Peppler, Trudi K.
STOClassificationExternal:
N
STOKeywordsExternal:
*CESIUM CLOCKS, TIME SCALE, TIME TRANSFER, PRECISE TIME, COORDINATED UNIVERSAL TIME
STOPublisher:
USA
Language:
English
STOReportSource:
http://www.dtic.mil/docs/citations/ADA500878
Published:
12/1/1987
Created at 11/9/2016 3:26 PM by System Account
Last modified at 11/9/2016 3:26 PM by System Account
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