M Weiss and T Weissert 1991 Metrologia 28 65 doi:10.1088/0026-1394/28/2/002
M Weiss and T Weissert
Show affiliationsThe existing AT1 algorithm produces a time scale with a fractional frequency variation smaller than that of any clock in the ensemble. We are developing a modification to AT1 that includes the additional desirable features: automatic frequency-step detection, the option to run in an optimal post-processing mode and to run with minimal supervision in non-technical environments. These properties are facilitated by the inclusion of a Kalman-filter estimate of the frequency variance of each clock in the scale. Results are reported from both simulated and real clock data to demonstrate automatic frequency-step detection.
Issue 2 (1991)
Received 24 April 1990
M Weiss and T Weissert 1991 Metrologia 28 65
Meijuan Yu et al 2009 J. Phys.: Conf. Ser. 190 012060
Emilio Elizalde and Jaume Haro 2009 J. Phys. A: Math. Theor. 42 472001
D J Craik 1974 J. Phys. D: Appl. Phys. 7 1566
C Johnson et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 119
Felix Weber et al 2005 Smart Mater. Struct. 14 1172
A G Mark et al 2005 J. Phys.: Condens. Matter 17 571
David Smith 2003 Phys. Educ. 38 491
John Norbury et al 2002 Nonlinearity 15 2077
C.D. Orth et al 1996 Nucl. Fusion 36 75