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The celestial mechanics approach: theoretical foundations

Beutler, Gerhard ; Jäggi, Adrian ; Mervart, Leoš ; Meyer, Ulrich

In: Journal of Geodesy, 2010, vol. 84, no. 10, p. 605-624

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    Titre
    • The celestial mechanics approach: theoretical foundations
    Auteur
    • Beutler, Gerhard. Astronomical Institute, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
    • Jäggi, Adrian. Astronomical Institute, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
    • Mervart, Leoš. Institute of Advanced Geodesy, Czech Technical University, K-152, FSvCVVT, Thakurova 7, 16629, Prague 6-Dejvice, Czech Republic
    • Meyer, Ulrich. Astronomical Institute, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland
    Type de document
    • Postprint
    Identifiant OAI-PMH
    • oai:doc.rero.ch:318359
    Summary
    Gravity field determination using the measurements of Global Positioning receivers onboard low Earth orbiters and inter-satellite measurements in a constellation of satellites is a generalized orbit determination problem involving all satellites of the constellation. The celestial mechanics approach (CMA) is comprehensive in the sense that it encompasses many different methods currently in use, in particular so-called short-arc methods, reduced-dynamic methods, and pure dynamic methods. The method is very flexible because the actual solution type may be selected just prior to the combination of the satellite-, arc- and technique-specific normal equation systems. It is thus possible to generate ensembles of substantially different solutions—essentially at the cost of generating one particular solution. The article outlines the general aspects of orbit and gravity field determination. Then the focus is put on the particularities of the CMA, in particular on the way to use accelerometer data and the statistical information associated with it