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Proceedings Paper

Precise orbit determination of low Earth orbiters using undifferenced GPS data
Author(s): Cui-lin Kuang; Fen Hou
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Paper 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.

Paper Details

Date Published: 28 October 2006
PDF: 7 pages
Proc. SPIE 6418, Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 64180I (28 October 2006); doi: 10.1117/12.712607
Show Author Affiliations
Cui-lin Kuang, Wuhan Univ. (China)
Fen Hou, Wuhan Univ. (China)


Published in SPIE Proceedings Vol. 6418:
Geoinformatics 2006: GNSS and Integrated Geospatial Applications

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