Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jansc..28..315t&link_type=abstract
Journal of the Astronautical Sciences, vol. 28, Oct.-Dec. 1980, p. 315-326.
Astronomy and Astrophysics
Astronomy
2
Orbital Position Estimation, Satellite Orbits, Seasat Satellites, Dynamic Models, Geodynamics, Satellite Drag, Seasat Program
Scientific paper
The objectives and conclusions reached during the Seasat Precision Orbit Determination Experiment are discussed. It is noted that the activities of the experiment team included extensive software calibration and validation and an intense effort to validate and improve the dynamic models which describe the satellite's motion. Significant improvement in the gravitational model was obtained during the experiment, and it is pointed out that the current accuracy of the Seasat altitude ephemeris is 1.5 m rms. An altitude ephemeris for the Seasat spacecraft with an accuracy of 0.5 m rms is seen as possible with further improvements in the geopotential, atmospheric drag, and solar radiation pressure models. It is concluded that since altimetry missions with a 2-cm precision altimeter are contemplated, the precision orbit determination effort initiated under the Seasat Project must be continued and expanded.
Born George H.
Tapley Byron D.
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