Assessment of Precise Orbit Determination of JASON-2 Satellite Using Different Observation Technologies

Abstract

Abstract:

This paper studied the accuracy of precise orbit determination by using different observation technologies such as GPS, SLR and DORIS respectively based on different orbit validating method, and taken JASON-2 as example to analysis attitude model error and its effect on orbit, discussed in detailed the strategy of orbit determination, orbit accuracy and orbit stacking based on results of orbit validating. Experiment has been carried out by using observational data and the results show us that: the attitude model error on orbit determined by DORIS, GPS and SLR respectively is 0.040、0.036 and 0.033m. The orbit determined by DORIS is the best among that determined by GPS, SLR and DORIS and the orbit determined by SLR is the worse. When we combine the orbit determined by GPS, DORS and SLR by using the weight based on result of SLR validating and orbit Overlap, the combined orbit have similar accuracy, when comparing it with JPL orbit, it show us that the radial accuracy can reach to 2 centimeters.

References

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