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Ephemeris errors of GPS satellitesNumerical models are developed to examine the potential effects of solar radiation, the terrestrial gravitational field, and the estimated initial state of the Global Positioning System (GPS) satellites, along with the capability of current models to account for the effects on the ephemeris of the GPS constellation. Of particular interest is the accuracy of the satellite position predictions for applications in geodesy. The main characteristics of the GPS orbits are reviewed and linear combinations of possible errors for 3 day ephemerides are examined. It is shown that the effects of the forces on the GPS orbits will be dynamic, yet can be expressed simply enough to maintain positioning accuracy to 1 percent. The calculations can also take into consideration solar wind pressure on the solar panels.
Document ID
19860055062
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Colombo, O. L.
(EG & G Washington Analytical Services Center Inc., Lanham, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Bulletin Geodesique
Volume: 60
Issue: 1 19
ISSN: 0007-4632
Subject Category
Astrodynamics
Accession Number
86A39800
Funding Number(s)
CONTRACT_GRANT: NAS5-28067
Distribution Limits
Public
Copyright
Other

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