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Transformation from proper time on Earth to coordinate time in solar system barycentric space-time frame of reference
Author(s) -
Theodore D. Moyer
Publication year - 1981
Publication title -
celestial mechanics
Language(s) - English
Resource type - Journals
eISSN - 2214-7284
pISSN - 0008-8714
DOI - 10.1007/bf01228544
Subject(s) - barycentric coordinate system , reference frame , coordinate system , position (finance) , spacecraft , time transfer , atomic clock , transformation (genetics) , coordinate time , physics , computation , solar system , expression (computer science) , function (biology) , geodesy , frame (networking) , geometry , computer science , mathematics , algorithm , satellite , optics , astronomy , geography , chemistry , telecommunications , biochemistry , programming language , finance , economics , biology , evolutionary biology , gene
In order to obtain accurate computed values of Earth-based range and Doppler observables of a deep space probe, an expression is required for the time differencet-τ, wheret is coordinate time in the solar system barycentric space-time frame of reference and τ is proper time recorded on a fixed atomic clock on Earth. This paper is Part 2 of a two-part article which obtains an expression fort-τ which is suitable for use in obtaining computed values of observations of a spacecraft or celestial body located anywhere in the solar system. The expression can also be used in the computation of Very Long Baseline Interferometry data types. Part 1 obtained an expression fort-τ which is a function of position and velocity vectors of the major celestial bodies of the solar system and the atomic clock on Earth which reads τ. In Part 2, this expression is transformed to a function of time and the Earth-fixed coordinates of the atomic clock.

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