An alternative method of orbit improvement for a Doppler-tracked satellite - A step toward earth gravity model refinement

Details An alternative method of orbit improvement for a Doppler-tracked satellite - A step toward earth gravity model refinement An alternative method of orbit improvement for a Doppler-tracked satellite - A step toward earth gravity model refinement

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9210697l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Sept. 10, 1987, p. 10697-10710.

Astronomy and Astrophysics

Astronomy

2

Astronomical Models, Earth Gravitation, Geodetic Accuracy, Orbit Calculation, Planetary Gravitation, Satellite Doppler Positioning, Satellite Tracking, Error Analysis, Geopotential, Seasat Satellites

Scientific paper

A method of orbit and gravity field improvement for Doppler-tracked satellites is developed, which is intended for the use of future geodetic and altimetric missions such as DORIS/SPOT 2, TOPEX/Poseidon, and ERS 1. In addition, an analytical relationship between Doppler residuals and orbit errors due to force mismodeling is derived. Simulation results achieved for the Seasat and the DORIS are presented and discussed. It is shown that with a simulated random noise of 0.3 cm/s, orbit error is recovered with an accuracy of a few decimeters, while with a noise level of 0.3 mm/s, orbit and force errors are recovered with an accuracy better than 0.2 m and 0.2 mGal at 800-km altitude.

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