Title :
Time comparison using Cs-clocks, uncertainty evaluation
Author :
Kalliomäki, Kalevi ; Mansten, Tapio ; Iisakka, Ilkka
Author_Institution :
Electr. Group, MIKES, Espoo, Finland
Abstract :
In Nordic and Baltic countries there are several national and other time & frequency laboratories having atomic clocks. The accuracy ot the time is mostly based on factory calibrated GPS receivers without knowledge on the effect of local cabling and other delays. Thus the time error could easily be 10 ns or more. To improve the situation, an Euromet project 860 was started. At the same time an analysis of uncertainties dealing with time comparison using Cs-clocks was carrier out.
Keywords :
atomic clocks; Cs-clock; GPS receiver; atomic clock; 1f noise; Atomic clocks; Delay effects; Frequency; Global Positioning System; Hydrogen; Laboratories; Masers; Production facilities; Uncertainty;
Conference_Titel :
Frequency Control Symposium, 2009 Joint with the 22nd European Frequency and Time forum. IEEE International
Conference_Location :
Besancon
Print_ISBN :
978-1-4244-3511-1
Electronic_ISBN :
1075-6787
DOI :
10.1109/FREQ.2009.5168378
