Abstract
Station-keeping (SK) is indispensable in actual geostationary (GEO) satellite missions. Due to the luni-solar gravity perturbations, the inclination of a GEO satellite suffers the issues of secular drift and long-period oscillation. Current north-south (NS) SK strategies maintain the GEO satellite’s orbit with high accuracy but low fuel efficiency. In this work, an efficient high-accuracy NS-SK strategy is developed for the GEO satellites. First, an averaging method is employed to decrease the accumulation of the secular drift within a one-solar-day SK cycle, while the long-period oscillation caused by the solar gravity is damped to further improve the orbital accuracy using the impulse and finite-thrust propulsions. Second, we contribute a fuel-optimal cycle that reduces the fuel consumption and a fixed-interval cycle that executes SK control in fixed time interval every day to further enhance the proposed NS-SK strategy. Numerical simulations show that the improved strategy can achieve high-accuracy NS-SK with little fuel consumption. Moreover, results also demonstrate that the fixed-interval cycle can reach higher NS-SK accuracy while consuming less fuel.
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This work was supported by the National Natural Science Foundation of China (Grant No. 61273051), sponsored by Qing Lan Project, and the Funding for Outstanding Doctoral Dissertation in Nanjing University of Aeronautics and Astronautics (NUAA) (Grant No. BCXJ19-12).
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Huang, X., Yang, B., Li, S. et al. Efficient high-accuracy north-south station-keeping strategy for geostationary satellites. Sci. China Technol. Sci. 64, 2415–2426 (2021). https://doi.org/10.1007/s11431-021-1907-x
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DOI: https://doi.org/10.1007/s11431-021-1907-x