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UT1 prediction based on long-time series analysis

Tissen V., Tolstikov A., Malkin Z.

Artificial Satellites : Journal of Planetary Geodesy

2010

Vol. 45, No. 2

111--118

A new method is developed for prediction of UT1. The method is based on construction of a general polyharmonic model of the Earth rotation parameters variations using all the data available for the last 80-100 years, and modified autoregression technique. A rigorous comparison of UT1 predictions computed at SNIIM with the prediction computed by IERS (USNO) in 2008-2009 has shown that proposed method provides better accuracy both for ultra-short and long term predictions.