Kinematic Precise Orbit Determination for LEO Satellites Using Space-borne Dual-frequency GPS Measurements

Details Kinematic Precise Orbit Determination for LEO Satellites Using Space-borne Dual-frequency GPS Measurements Kinematic Precise Orbit Determination for LEO Satellites Using Space-borne Dual-frequency GPS Measurements

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011acasn..52..495p&link_type=abstract

Acta Astronomica Sinica, vol. 52, no. 6, p. 495-509

Astronomy and Astrophysics

Astronomy

Celestial Mechanics, Space Vehicles, Methods: Data Analysis

Scientific paper

Kinematic precise orbit determination (POD) is independent of satellite dynamics (e.g., Earth gravity field, atmospheric drag, solar radiation pressure, etc.). It is the distinctive approach of space-borne GPS technique, and well suited for orbit determination of Low Earth orbiting (LEO) satellites which are strongly perturbed by atmosphere. Firstly, an algorithm of kinematic POD is developed by using the zero-difference space-borne dual-frequency GPS measurements in this paper. And then, how to pre-process the space-borne dual-frequency GPS data and how to set the estimated parameters of kinematic POD are discussed in detail. Finally, the observational data from GRACE (Gravity Recovery And Climate Experiment) satellites covering the whole month of February 2008 are employed to validate the effectiveness and reliability of the method introduced in this paper. It is demonstrated that kinematic POD reaches an accuracy of about 5 cm (with respect to satellite laser ranging), which is at the same level of accuracy as dynamic and reduced-dynamic POD.

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