Other
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983cemec..29....3d&link_type=abstract
Celestial Mechanics (ISSN 0008-8714), vol. 29, Jan. 1983, p. 3-26. Sponsorship: Natural Sciences and Engineering Research Counci
Other
3
Altitude, Atmospheric Density, Atmospheric Models, Atmospheric Temperature, Satellite Drag, Satellite Perturbation, Aerodynamic Drag, Atmospheric Composition, Atmospheric Effects, Exosphere, Mathematical Models, Satellite Lifetime, Temperature Profiles
Scientific paper
Closed-form expressions are derived for the density of the atmosphere as a function of altitude and exospheric temperature. The numerical model used as a reference is the Jacchia 1977 Static Density Model. Unlike previous work, the present method of derivation is independent of the particular mathematical form of the reference model. In fact, many intermediate 'tuning' parameters provide the flexibility necessary to adjust these solutions optimally to all numerical models of the Jacchia type. Some other improvements to existing analytic Jacchia models are made, namely increased numerical efficiency, smaller deviation from the reference model and continuity of the first derivative at all altitudes. The model can also be expanded for improved accuracy. Numerical results and comparisons with the Jacchia 1977 model are made. Potential numerical difficulties are identified and methods given to remove them.
de Lafontaine Jean
Hughes Patrick P.
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