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Prediction Analysis of UT1-UTC Time Series by Combination of the Least-Squares and Multivariate Autoregressive Method [PDF]
, 2011 The objective of this paper is to extensively discuss the theory behind the multivariate autoregressive prediction technique used elsewhere for forecasting Universal Time (UT1-UTC) and to characterise its performance depending on input geodetic and geophysical data.
Tomasz Niedzielski, Wiesław Kosek
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Advances in Space Research, 2017
Abstract UT1-UTC is an important part of the Earth Orientation Parameters (EOP). The high-precision predictions of UT1-UTC play a key role in practical applications of deep space exploration, spacecraft tracking and satellite navigation and positioning.
Song Jia +3 more
exaly +2 more sources
Abstract UT1-UTC is an important part of the Earth Orientation Parameters (EOP). The high-precision predictions of UT1-UTC play a key role in practical applications of deep space exploration, spacecraft tracking and satellite navigation and positioning.
Song Jia +3 more
exaly +2 more sources
Journal of Geodesy, 2007
This article presents the application of a multivariate prediction technique for predicting universal time (UT1–UTC), length of day (LOD) and the axial component of atmospheric angular momentum (AAM χ 3). The multivariate predictions of LOD and UT1–UTC are generated by means of the combination of (1) least-squares (LS ...
Tomasz Niedzielski, Wiesław Kosek
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This article presents the application of a multivariate prediction technique for predicting universal time (UT1–UTC), length of day (LOD) and the axial component of atmospheric angular momentum (AAM χ 3). The multivariate predictions of LOD and UT1–UTC are generated by means of the combination of (1) least-squares (LS ...
Tomasz Niedzielski, Wiesław Kosek
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International Association of Geodesy SymposiaAbstractThe difference UT1-UTC is the most variable quantity among the Earth Orientation Parameters (EOP) with significant unpredictable variation. It can be measured only with the quasi-space-fixed technique VLBI. The IVS organizes two different VLBI observation campaigns: The bi-weekly 24-hour Rapid campaigns and the daily 1-hour Intensive sessions ...
Claudia Flohrer +2 more
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Revisiting European VLBI Intensives for Rapid UT1-UTC Determination
Accurate, low-latency UT1–UTC estimates are essential for monitoring Earth’s highly variable rotation and for real-time applications ranging from GNSS to lunar and deep-space missions. One-hour VLBI Intensive sessions, typically conducted with two stations on long east–west baselines, have the primary goal of providing rapid UT1–UTC estimates.Lisa Kern +5 more
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Investigating the impact of IERS and IVS data as input for ultra-short-term prediction of UT1-UTC
The Earth’s rotation phase, expressed as UT1-UTC, is the most crucial geodetic parameter that can only be precisely measured using Very Long Baseline Interferometry (VLBI), although with considerable latency. Reliable predictions of UT1-UTC are essential for real-time positioning and navigation, and thus several approaches have been developed to ...Arnab LAHA +4 more
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We present preliminary results of ultra-short-term prediction (10-day forecast horizon) of UT1-UTC and LOD. Forecast procedure is based on Dynamic Mode Decomposition (DMD) and uses IERS EOP 14 C04 as a reference as well as Atmospheric Angular Momentum (AAM) as auxiliary data (AAM come from GFZ Potsdam and ETH Zurich).Two main prediction experiments ...
Maciej Michalczak +3 more
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Maciej Michalczak +3 more
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Wavelet Analysis of high-frequency UT1-UTC varia¬tions
1999Titov, O. +1 more
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