Statistics – Computation
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988kfnt....4...55m&link_type=abstract
Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 4, May-June 1988, p. 55-62. In Russian.
Statistics
Computation
Celestial Geodesy, Geodynamics, Satellite Observation, Chebyshev Approximation, Computational Astrophysics, Earth Tides, Mathematical Models, Nutation, Spherical Harmonics, Time Dependence
Scientific paper
The problem of the mathematically homogeneous representation of time-dependent parameters is considered in the solution of global geodynamics problems associated with the processing of satellite observations. Two variants of the time-dependent geodynamic model of the geopotential are considered: (1) the conventional spherical harmonic expansion and (2) field approximation by a system of point masses. Formulas are obtained for the computation of the Chebyshev expansions for time-dependent phenomena (i.e., nutation, earth tides, and the tidal variation of UT1).
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