Title :
Analysis of correlations, and link and equipment noise in the uncertainties of [UTC - UTC(k)]
Author :
Lewandowski, Wlodzimierz ; Matsakis, Demetrios ; Panfilo, Gianna ; Tavella, Patrizia
Author_Institution :
Bur. Int. des Poids et Mesures, Sevres
fDate :
4/1/2008 12:00:00 AM
Abstract :
We refine our estimate of the uncertainty in [UTC - UTC(k)] by taking into account the contribution of correlations between the links. Using a matrix formulation to facilitate computation, we re-analyze the link-based uncertainties and obtain the same solution as found previously. We then evaluate the site-based uncertainties and compare the results with the link-based uncertainties.
Keywords :
measurement uncertainty; noise; time measurement; [UTC - UTC(k)]; coordinated universal time; correlation analysis; equipment noise; link noise; link-based uncertainties; site-based uncertainties; time standard; Covariance matrix; Equations; Estimation theory; Laboratories; Observatories; Random variables; Standards publication; Uncertainty;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2008.709
