Using the quasar VLBI network for the fundamental time—positioning service of the GLONASS space system

Details Using the quasar VLBI network for the fundamental time—positioning service of the GLONASS space system Using the quasar VLBI network for the fundamental time—positioning service of the GLONASS space system

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008astl...34...59f&link_type=abstract

Astronomy Letters, Volume 34, Issue 1, pp.59-68

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Regular high-precision determinations of the Earth's orientation parameters (EOPs) on the Quasar VLBI Network were begun in August 2006. The observations are performed within the framework of two national programs: daily sessions at three observatories of the Network to determine all five EOPs (the RU-E program) and 8-h sessions on the Zelenchukskaya-Badary and Svetloe-Badary baselines to determine the Universal Time (the RU-U program). The observations from August 2006 through May 2007 are analyzed. The rms deviations of the EOP values obtained in the RU-E program from the IERS C04 series are 1.1 mas for X p and Y p, 37 µs for UT1-UTC, and 0.7 and 0.6 mas for X c and Y c, respectively. These results closely match the prospective requirements of GLONASS. The rms deviations of the Universal Times obtained in the RU-U program from the IERS C04 series are 146 µs. We consider the immediate prospects for improving the accuracy of EOP determinations in daily sessions and for implementing the e-VLBI mode for an online determination of the Universal Time.

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