Precise orbit determination of low Earth orbiters using undifferenced GPS data

Cui-lin Kuang; Fen Hou

doi:10.1117/12.712607

28 October 2006 Precise orbit determination of low Earth orbiters using undifferenced GPS data

Cui-lin Kuang, Fen Hou

Proceedings Volume 6418, Geoinformatics 2006: GNSS and Integrated Geospatial Applications; 64180I (2006) https://doi.org/10.1117/12.712607
Event: Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 2006, Wuhan, China

Abstract

Although POD with GPS has been tested using data from various satellites (e.g. CHAMP, GRACE etc.) with different approaches, there are still many open issues concerning the optimum way to determine LEO satellite orbits with GPS. The emphasis of this paper is to develop an efficient method for precise orbit determination of LEOs. To avoid the need for reference measurements from ground-based reference receivers, the analysis is based on an undifferenced processing of GPS code and carrier-phase measurements. The idea was to combine the kinematic and dynamic approaches, by using them interactively, in separate solutions, fitting dynamic orbits to kinematic orbit. So a purely kinematic orbit for the LEOs is obtained simultaneously with the reduced-dynamic orbit. Testing results show the precise of PPP kinematic orbit is about 22cm, and the precise of reduced-dynamic orbit is about 9cm. Also the reduced-dynamic orbit is smoother than PPP kinematic orbit.

Citation Download Citation

Cui-lin Kuang and Fen Hou "Precise orbit determination of low Earth orbiters using undifferenced GPS data", Proc. SPIE 6418, Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 64180I (28 October 2006); https://doi.org/10.1117/12.712607

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