Summary
The method for predicting x, y, and UT1-UTC as conceived and implemented by the Subbureau for Rapid Service and Prediction of the International Earth Rotation Service (IERS) is shown. For polar motion, the method is an extrapolation of an annual ellipse and Chandler circle. The method for UT1-UTC involves a simple differencing technique.
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McCarthy DD, Luzum BJ, (1991) Combination of Precise Observations of the Orientation of the Earth. Accepted byBulletin Geodesique.
McCarthy DD, (1988) Predicting Earth Orientation. InThe Earth's Rotation and Reference Frames for Geodesy and Geodynamics, pp. 275–280, A. K. Babcock and G. A. Wilkins, eds., Kluwer Academic Publishers, Dordrecht.
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McCarthy, D.D., Luzum, B.J. Prediction of Earth orientation. Bulletin Géodésique 65, 18–21 (1991). https://doi.org/10.1007/BF00806338
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DOI: https://doi.org/10.1007/BF00806338