High frequency variations of the Earth's instantaneous angular velocity vector. Determination from VLBI data analysis.

Details High frequency variations of the Earth's instantaneous angular velocity vector. Determination from VLBI data analysis. High frequency variations of the Earth's instantaneous angular velocity vector. Determination from VLBI data analysis.

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...317..601b&link_type=abstract

Astronomy and Astrophysics, v.317, p.601-609

Astronomy and Astrophysics

Astrophysics

5

Astrometry, Earth, Ephemerides

Scientific paper

A new determination of the Earth's orientation is proposed by estimating only 3 infinitesimal angles. This method is applied to the determination of the diurnal and sub-diurnal variations in the Earth's orientation from the VLBI campaign from 11 to 24 January 1994. It has been implemented in the SteelBreeze software for VLBI data processing at the Main Astronomical Observatory of the Ukraine. The high-frequency variations of the instantaneous rotation vector are then calculated and compared with the Herring and Dong model for these variations after being referred to the instantaneous rotation axis.

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