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Recent improvements in the U.S.N.O. combined solution for Earth rotation parameters

Published online by Cambridge University Press:  03 August 2017

A. K. Babcock
A. K. Babcock*
Affiliation:
U. S. Naval Observatory, Washington, D.C. 20390, USA

Abstract

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The USNO combined solution for Earth rotation parameters, commonly known as CORE has recently been made more sensitive to high-frequency signals in the various types of input data. This is particularly important in the estimation of the variation in UT1—UTC which has recently been shown to have real fluctuations over time intervals of less than a week. A second modification was introduced to tailor the data smoothing to the particular noise characteristics of the individual techniques. This has resulted in a redistribution of the weights of these techniques, and in improved time-resolution and accuracy of the CORE solution.

Type
III. Determination of Earth Rotation Parameters
Information
Symposium - International Astronomical Union , Volume 128: Earth's Rotation and Reference Frames for Geodesy and Geodynamics , 1988 , pp. 241 - 245
Copyright
Copyright © Reidel 1988 

References

McCarthy, Dennis D. and Babcock, Alice K., 1985, ‘The U. S. Naval Observatory C.O.R.E. Solution During Project MERIT’, in Proceedings of the International Conference on Earth Rotation and the Terrestrial Reference Frame, July 31 – August 2, 1985, Columbus, Ohio.Google Scholar
Robertson, D. S. and Carter, W. E., 1985, ‘Earth Orientation Determinations from VLBI Observations’, op. cit. Google Scholar
Tapley, B. D., Eanes, R. J., and Schutz, B. E., 1985, ‘Analysis of Earth Rotation from Lageos SLR Data’, op. cit. Google Scholar