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Precise orbit determination for geostationary satellites with multiple tracking techniques

Precise orbit determination for geostationary satellites with multiple tracking techniques,10.1007/s11434-010-0074-x,Chinese Science Bulletin,Rui Guo,

Precise orbit determination for geostationary satellites with multiple tracking techniques   (Citations: 5)
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A new precise orbit determination (POD) strategy based on the combination of satellite laser ranging (SLR) and C-band transfer ranging for geostationary satellites (GEO) is presented. Two approaches to calibrate ranging biases of the C-band ranging system are proposed, namely the two tracking system co-location comparison and the combined POD method, with calibration accuracies estimated to be 0.5 ns and 1 ns respectively. Using data from a C-band tracking network in China, POD experiments indicate that meter-level POD accuracy is achievable for GEO. Root-mean-square (RMS) of the post-fit C-band ranging data is about 0.205 m. The radial component errors of POD are evaluated with SLR data from a station in Beijing, with residual RMS of 0.133 m. Orbital overlapping experiments show the total orbit error is a few meters. Computations of SLR residuals also suggest that for 2-hour prediction, the predicted radial error is about 0.373 m.
Journal: Chinese Science Bulletin - CHIN SCI BULL , vol. 55, no. 8, pp. 687-692, 2010
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