Abstract
Kinematic positions of individual low Earth orbiting satellites equipped with spaceborne GPS receivers have been used in the past to determine the long wavelength static part of the Earth’s gravity field. In the near future GPS-derived relative kinematic positions of present and upcoming formation flying satellites like COSMIC and SWARM could be used in addition to perform and improve the long wavelength static part of the gravity field also with non-dedicated satellites. Since space baselines between satellites can be determined more precisely from GPS than the individual positions, a corresponding improvement of the estimated gravity field coefficients is commonly expected. We review and extend the principles of gravity field determination from kinematic positions of single satellites and apply them to kinematic baseline data. Simulated as well as real data from the GRACE GPS receivers are used to evaluate our procedures and to assess the impact of different GPS observables and processing strategies on the quality of the estimated gravity field coefficients
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Jäggi, A., Beutler, G., Prange, L., Dach, R., Mervart, L. (2009). Assessment of GPS-only Observables for Gravity Field Recovery from GRACE. In: Sideris, M.G. (eds) Observing our Changing Earth. International Association of Geodesy Symposia, vol 133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85426-5_14
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DOI: https://doi.org/10.1007/978-3-540-85426-5_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85425-8
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