Other
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sosyr..45..584e&link_type=abstract
Solar System Research, Volume 45, Issue 7, pp.584-588
Other
On-Board Forecasting Of Sc Cog, Geostationary Sc, Algorithm For On-Board Forecasting, Sc Independent Operation, Forecasting Accuracy, Forecasting Error, Standing Point, Integration Of Differential Equations Of Sc Motion, Perturbations Due To The Earth'S Gravitational Field Eccentricity, Transversal Acceleration, Earth'S Gravitational Field Harmonics
Scientific paper
A method is suggested for enhancing the on-board forecasting accuracy of the COG motion of a GEO SC with a long time of independent operation. The suggested method consists of introducing so-called compensative transversal acceleration (CTA), along with zonal harmonics into the right sides of the differential equations of SC motion among other disturbances due to the Earth's gravitational field eccentricity. The CTA compensates the integral effect of the sectoral and tesseral harmonics; its value is constant for a specified point of GEO SC location (standing point) and is calculated on the Earth from numerical integration of differential equations of motion taking into account the complete set of gravitational field harmonics. The CTA value is transmitted on-board of an SC as program command data. The method is implemented in algorithms of on-board forecasting of Electro-L SC motion and can be used to enhance the on-board forecasting accuracy of the COG motion of GEO SCs with a long time of independent operation.
Evgrafov A. E.
Nazarov E. A.
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