Abstract A new strategy of precise orbit determination (POD) for GEO (Geostationary Earth Orbit) satellite using SATRE (SAtellite Time and Ranging Equipment) is presented. Two observation modes are proposed and different channels of the same instruments are used to construct different observation modes, one mode receiving time signals from their own station and the other mode receiving time signals from each other for two stations called pairs of combined observations. Using data from such a tracking network in China, the results for both modes are compared. The precise orbit determination for the Sino-1 satellite using the data from 6 June 2005 to 13 June 2005 has been carried out in this work. The RMS (Root-Mean-Square) of observing residuals for 3-day solutions with the former mode is better than 9.1cm. The RMS of observing residuals for 3-day solutions with the latter mode is better than 4.8cm, much better than the former mode. Orbital overlapping (3-day orbit solution with 1-day orbit overlap) tests show that the RMS of the orbit difference for the former mode is 0.16m in the radial direction, 0.53m in the along-track direction, 0.97m in the cross-track direction and 1.12m in the 3-dimension position and the RMS of the orbit difference for the latter mode is 0.36m in the radial direction, 0.89m in the along-track direction, 1.18m in the cross-track direction and 1.52m in the 3-dimension position, almost the same as the former mode. All the experiments indicate that a meter-level accuracy of orbit determination for geostationary satellite is achievable.
Geostationary orbit determination using SATRE
Advances in Space Research ; 48 , 5 ; 923-932
2011-05-03
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Geostationary orbit determination using SATRE
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