Practical Relativistic Clock Synchronization For High-Accuracy Space Astrometry

Details Practical Relativistic Clock Synchronization For High-Accuracy Space Astrometry Practical Relativistic Clock Synchronization For High-Accuracy Space Astrometry

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iau...261.0908l&link_type=abstract

American Astronomical Society, IAU Symposium #261. Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Ana

Astronomy and Astrophysics

Astronomy

Scientific paper

Future high-accuracy space astrometry missions, such as Gaia, will need a datation of observations consistent with General Relativity nowadays used as standard background for global data processing scheme. In this work, we are focusing in the realization of the onboard time scale. The onboard clock, being not ideal and consequently tainted with systematic biases, has to be carefully calibrated to the ideal relativistic proper time of the satellite. We present here a modelling of this essential step enabling to provide a reliable relation between the onboard time and TCB, time scale suitable for global data processing.

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