Regularization of Motion Equations with L-Transformation and Numerical Integration of the Regular Equations

Details Regularization of Motion Equations with L-Transformation and Numerical Integration of the Regular Equations Regularization of Motion Equations with L-Transformation and Numerical Integration of the Regular Equations

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cemda..85..341p&link_type=abstract

Celestial Mechanics and Dynamical Astronomy, v. 85, Issue 4, p. 341-393 (2003).

Astronomy and Astrophysics

Astronomy

3

Two-Body Problem, Regularization, L-Matrices, Runge-Kutta-Fehlberg Methods

Scientific paper

The sets of L-matrices of the second, fourth and eighth orders are constructed axiomatically. The defining relations are taken from the regularization of motion equations for Keplerian problem. In particular, the Levi-Civita matrix and KS-matrix are L-matrices of second and fourth order, respectively. A theorem on the ranks of L-transformations of different orders is proved. The notion of L-similarity transformation is introduced, certain sets of L-matrices are constructed, and their classification is given. An application of fourth order L-matrices for N-body problem regularization is given. A method of correction for regular coordinates in the Runge-Kutta-Fehlberg integration method for regular motion equations of a perturbed two-body problem is suggested. Comparison is given for the results of numerical integration in the problem of defining the orbit of a satellite, with and without the above correction method. The comparison is carried out with respect to the number of calls to the subroutine evaluating the perturbational accelerations vector. The results of integration using the correction turn out to be in a favorable position.

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