Ground-based VLBI relativistic time delay model for Spacecrafts in Solar System

Details Ground-based VLBI relativistic time delay model for Spacecrafts in Solar System Ground-based VLBI relativistic time delay model for Spacecrafts in Solar System

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acasn..44...28z&link_type=abstract

Acta Astronomica Sinica, vol. 44, no. 1, p. 28-36.

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Solar System: General, Relativity, Time Delay, Vlbi

Scientific paper

The ground VLBI relativistic time delay model for spacecraft in the solar system is derived, first in the barycentric reference system and then transferred to the non-spinning geocentric reference system. A universal analyzed expression is presented, from which another model given by Ping Jinsong can be obtained. It is also pointed that several models for extra-galactic sources are available from the formula such as Zhu-Groten?Shapiro and IERS(92,96) recommended models if the geocentric distances of the sources become infinite large. Adopting the formula given here is recommended in processing VLBI observable due to its rigorousness and errors-free. The using limitation of the formula and estimation in magnitude for various neglecting items as well as the computation steps in details are also discussed.

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