Results 61 to 70 of about 137,331 (82)
UTC-UTI Kick-Off Meeting Technical Presentations
, 2017 Presentations of project ideas during the UTC-UTI Kick-Off Meeting, February 17, 2017, Colorado School of ...
Marte Gutierrez +1 more
core +1 more source
GIS collaboration with UTC,Thrive Regional Partnership, and the Greater Chattanooga Region
, 2020 We present several of our research products that have resulted in our collaboration with UTC students/faculty/staff, Thrive Regional Partnership, and agencies of the greater Chattanooga region, using modern methods and innovations in GIS ...
Mix, Charlie +2 more
core
Impact of IVS Solutions on Ultra-Short-Term UT1-UTC predictions
LAHA, ARNAB +4 more
openaire +2 more sources
Simulating the impact of new VLBI Intensive baselines on combined UT1-UTC solutions
Page, Jessica +3 more
openaire +2 more sources
Short-term prediction of UT1-UTC by combination of the grey model and neural networks
Advances in Space Research, 2017 Abstract UT1-UTC predictions especially short-term predictions are essential in various fields linked to reference systems such as space navigation and precise orbit determinations of artificial Earth satellites. In this paper, an integrated model combining the grey model GM(1, 1) and neural networks (NN) are proposed for predicting UT1-UTC.
Lei, Yu +7 more
exaly +4 more sources
Potential of UT1–UTC transfer to the Galileo constellation using onboard VLBI transmitters
Journal of Geodesy, 2022 UT1-UTC is one of the Earth orientation parameters (EOP) that can only be determined by very long baseline interferometry (VLBI), observing distant celestial sources to measure the Earth rotation angle.
Håkan Sert +2 more
exaly +3 more sources
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Modeling UT1-UTC and Polar Motion On-Board GPS Satellites
Navigation, Journal of the Institute of Navigation, 1984Autonomous navigation of GPS satellites requires on-board knowledge of UT1-UTC and polar motion values. This study examines the ability of a fourth-order and fifth-order Fourier series to predict UT1-UTC values over six months based on one or three year BIH tables. Results show that UT1-UTC errors of approximately 40 ms occur over six months when three-
JACKSON R. FERGUSON, RAYNOR L. DUNCOMBE
exaly +2 more sources
Estimation of the subdiurnal UT1-UTC variations by the least squares collocation method
Astronomical and Astrophysical Transactions, 2000Abstract The result of the two-week VLBI experiment CONT'94 has been processed by the least squares collocation method to calculate the UT1-UTC time series with high temporal resolution (one value every few minutes). It allows us to estimate the influence of tidal variations arising from the world's oceans on the EOP.
O A Titov
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
exaly +2 more sources
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
exaly +2 more sources