Joint GPS/GALILEO Precise Positioning Performance Using Active Reference Networks

Eva Schueler, Torben Schueler and Bernd Eissfeller

Abstract:	Active GNSS networks allow the derivation of corrections for both tropospheric and ionospheric delays that can be used by roving receivers. These corrections greatly facilitate the process of ambiguity resolution, and thus provide rapid access to precise carrier-phase solutions. This article portrays the benefit from joint GPS and GALILEO data processing for precise RTK positioning requiring quick ambiguity fixing using atmospheric corrections from reference station networks within Germany. It will be demonstrated that both the increased number of satellites as well as the use of three instead of two carrier frequencies can be beneficial in terms of positioning performance. However, residual errors in the atmospheric corrections from the active GNSS network will always be present. For this reason, the additional estimation of atmospheric states at the rover site is confirmed to be of importance.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	661 - 667
Cite this article:	Schueler, Eva, Schueler, Torben, Eissfeller, Bernd, "Joint GPS/GALILEO Precise Positioning Performance Using Active Reference Networks," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 661-667.
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