Special Perturbations Employing Osculating Reference States

Details Special Perturbations Employing Osculating Reference States Special Perturbations Employing Osculating Reference States

Mar 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974cemec...9...41b&link_type=abstract

Celestial Mechanics, Volume 9, Issue 1, pp.41-53

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Scientific paper

The concept of employing osculating reference position and velocity vectors in the numerical integration of the equations of motion of a satellite is examined. The choice of the reference point is shown to have a significant effect upon numerical efficiency and the class of trajectories described by the differential equations of motion. For example, when the position and velocity vectors on the osculating orbit at a fixed reference time are chosen, a universal formulation is yielded. For elliptical orbits, however, this formulation is unattractive for numerical integration purposes due to Poisson terms (mixed secular) appearing in the equations of motion. Other choices for the reference point eliminate this problem but usually at the expense of universality. A number of these formulations, including a universal one, are considered here. Comparisons of the numerical characteristics of these techniques with those of the Encke method are presented.

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