Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..16e..42k&link_type=abstract
Nomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 200
Astronomy and Astrophysics
Astronomy
Scientific paper
The present study was undertaken to summarize and to develop the previous investigations of direct and reverse transformation between ICRS and ITRS in accordance with IAU ( 2000 ) Resolutions. The general procedure of ICRS and ITRS connection is considered as two steps transformation between ICRS-GCRS and GCRS-ITRS. Taken into account IAU Resolution B1(2000), application of four dimension coordinate systems for the reduction of observations is developed with estimation of the corresponding relativistic contributions in the GCRS-ITRS transformation. Algorithms of direct and reverse relativistic four dimension transformation are investigated. The technique, as proposed numerical realization, for practical use at the both steps is demonstrated.
Kumkova Irina I.
Stepashkin Michael
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