Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986asdy.conf..867a&link_type=abstract
IN: Astrodynamics 1985; Proceedings of the Conference, Vail, CO, August 12-15, 1985. Part 2 (A86-43201 20-12). San Diego, CA, Un
Astronomy and Astrophysics
Astronomy
Astrodynamics, Encke Method, Orbit Calculation, Satellite Perturbation, Minimum Variance Orbit Determination, Numerical Integration, Satellite Control, Stationkeeping
Scientific paper
An analysis is made to study the application of Encke's method for low-earth orbit propagation and determination. The numerical results, based on a comparison to Cowell's method using a single-step integration algorithm, have shown that for a typical low-earth orbit the integration step size can be increased by a factor of three while maintaining the same accuracy when the reference orbit is reinitialized frequently. The paper also addresses the integration of Encke's method using a multi-step algorithm such as the eighth-order Gauss-Jackson and exposes a numerical difficulty which is caused by frequency rectification of the reference orbit using a common starting method for the algorithm.
Alford R. L.
Liu J. F. J.
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