Summary
It is shown by means of an extensive simulation study as well as an experiment using real CHAMP data that it is feasible to accurately estimate non-conservative accelerations from precise GPS-based orbit perturbations. Assuming the availability of high-precision gravity field models, such as anticipated for GRACE and GOCE, an accuracy of better than 50 nm/s2 seems possible for 30-seconds averaged accelerations. The remaining dominant error sources seem to be GPS receiver carrier-phase noise and GPS ephemeris errors.
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van den IJssel, J., Visser, P., Haagmans, R. (2005). Determination of Non-Conservative Accelerations from Orbit Analysis. In: Reigber, C., Lühr, H., Schwintzer, P., Wickert, J. (eds) Earth Observation with CHAMP. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-26800-6_15
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DOI: https://doi.org/10.1007/3-540-26800-6_15
Publisher Name: Springer, Berlin, Heidelberg
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