Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992wadc.iafcr....l&link_type=abstract
IAF, International Astronautical Congress, 43rd, Washington, Aug. 28-Sept. 5, 1992. 8 p.
Astronomy and Astrophysics
Astronomy
Atmospheric Models, Orbit Perturbation, Satellite Drag, Space Stations, Spacecraft Orbits, Spacecraft Stability, Equations Of Motion, Orbital Elements, Solar Radiation, Spacecraft Motion, Upper Atmosphere
Scientific paper
The effect of the atmospheric model on calculations of the orbital perturbation of a space station at the height of 400 km was investigated by using a method based on analytic theory of orbital perturbations for three different atmospheric models: CIRA-72, CIRA-86, and DTM. In this method, the perturbation of atmospheric drag adopts mean value by numerically integrating one revolution, and then an atmospheric model is used to calculate the orbital perturbation. Results showed that the orbital drifts of the space station are different for three different atmospheric models, and increase with time. For the value of solar activity F10.7 = 150, the drift of a space station in orbit for 400 days could differ by as much as 9 km for different models. The effect of solar activity on orbital drift was obvious.
Chen Zha
Liu Ya-Ying
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