Comparative studies of atmospheric density models used for earth satellite orbit estimation
Previously cited in issue 19, p. 2986, Accession no. A82-38879
Shanklin, R. E., Jr.↗
Engineering topics
Shanklin, R. E., Jr.
Publications and source records attributed to Shanklin, R. E., Jr..
A comparative study of atmospheric density models in the context of definitive and predictive earth satellite orbit determination
The results of a comparative orbit determination study of four global atmospheric density models (modified Harris-Priester, Jacchia-Roberts, Mass Spectrometer/Incoherent Scatter (MSIS), and Simple Exponential Model (SEM)) are presented. Utilizing these models, definitive orbit determination consistency and accuracy are evaluated using the maximum position differences that occur during 6-hour overlap periods between ephemerides generated from 30-hour data arcs. Propagated ephemerides are compared with definitive orbit solutions to evaluate predictive accuracy. The results indicate that, for satellites above 300 kilometers, all four atmospheric density models produce comparable orbit determination accuracies when an atmospheric drag scaling factor and the satellite state vector are estimated in the orbit determination process.
Shanklin, R. E., Jr.↗
A comparative study of the Harris-Priester, Jacchia-Roberts, and MSIS atmospheric density models in the context of satellite orbit determination
The comparisons are summarized. The quantities compared include Bayesian weighted least squares differential correction statistics and orbit solution consistency and accuracy.
Shanklin, R. E., Jr.↗
Solar radiation force modeling for TDRS orbit determination
The relative orbit determination accuracies resulting from several TDRS models are evaluated. These models include spherical, single-plate, and restricted two-plate models. The plate models can be adjusted in both area and reflectivity through differential correction. The restricted two-plate model has an Earth-pointing plate and a solar plate; the orientation of the solar plate is restricted to rotation about an axis perpendicular to the satellite's orbital plane.
Lee, T.↗