Summary
The behaviour of the space-borne CHAMP GPS receiver clock over nearly three years is inspected by the results of the Rapid Science Orbit (RSO) determination and the on-board navigation solution (NAV). The analysis completes and enhances the results of the clock characterization study carried out earlier on a limited number of data. It is shown, that CHAMP on-board events like software uploads and hardware reboots frequently lead to large clock offsets, which are reduced on-board within a few hours. Comparisons of RSO and NAV solutions show, that the RSO clock offset estimates are additionally affected by bias and drift of the reference clocks chosen in the processing. The two independent solutions, RSO and NAV, indicate, that the CHAMP clock is free of a drift in the long term. In the short term, the clock parameters show a standard deviation of 0.4 µ/s and a small negative bias of 0.3 to 0.4 µ/s.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
References
Michalak G, Baustert G, König R, Reigber Ch (2003) CHAMP Rapid Science Orbit Determination. In: First CHAMP Mission R.esults for Gravity, Magnetic and Atmospheric Studies, eds. Reigber Ch, Lühr H Schwintzer P, p. 98–103.
König R., Neumayer KH, Michalak G, Grunwaldt L (2003) CHAMP Clock Error Characterization. In: First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, eds. Reigber Ch, Lühr H Schwintzer P, p. 32–37.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
König, R., Michalak, G., Grunwaldt, L., Reigber, C. (2005). CHAMP Clock Characterization Revisited. 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_28
Download citation
DOI: https://doi.org/10.1007/3-540-26800-6_28
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-22804-2
Online ISBN: 978-3-540-26800-0
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)