A European Wide Area DGPS Experiment: Final Results

Ian Casewell, Sally Basker, Gordon Johnson, Ole Hakegard, Borje Forssell, Gunter Hein and Dick Oskam

Abstract:	In 1992, the European Space Agency initiated a study to investigate the potential of WADGPS. This study required that any proposed WADGPS implementation be suitable for SPS users once GPS is fully operational, and both SA and A-S are activated. Algorithms to either model or correct for the various error sources have been designed and implemented in software. A European-wide measurement campaign was carried out in 1993 specifically to provide data with which the algorithms could be tested. The data have been processed, results have been obtained and conclusions drawn. This paper provides an overview of an envisaged European WADGPS implementation. The preferred algorithms are outlined, the measurement campaign discussed, and results presented for both dual and single frequency users. This paper concludes that horizontal accuracies of better than 6 m (95%) and vertical accuracies of better than 9.6 m (95%) may be achieved by a single frequency user throughout the network when the full constellation is in place.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1547 - 1557
Cite this article:	Casewell, Ian, Basker, Sally, Johnson, Gordon, Hakegard, Ole, Forssell, Borje, Hein, Gunter, Oskam, Dick, "A European Wide Area DGPS Experiment: Final Results," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1547-1557.
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