AUSPOS: Geoscience Australia’s On-line GPS Positioning Service

Minghai Jia, John Dawson, and Michael Moore

Abstract:	AUSPOS is Geoscience Australia’s on-line static GPS positioning service, providing user access to a state-of-the-art analysis system via a simple web-interface. Since its launch in 2001, AUSPOS has continued to be a widely used tool for the online processing of geodetic GPS data for surveying, mapping, geodesy, geophysics, hydrography, mining, construction, military and other applications. On 20 March 2011, Geoscience Australia released an upgraded version of the service (AUSPOS 2.1). The upgraded AUSPOS implements recent advances in analysis software and strategies, the reference frame ITRF2008, AUSGeoid09 and the latest transformation parameters between ITRF2008 and GDA94. AUSPOS now delivers precise ITRF2008 coordinates to users within 3-5 minutes while continuing to provide Australian users with access to GDA94 coordinates and derived AHD heights to the highest achievable accuracy by simultaneously processing up to seven consecutive days of user-supplied GPS data collected from up to 20 sites. The upgraded AUSPOS also provides more realistic coordinate uncertainty of its solutions. The uncertainty assessment method is based on the duration of a data set and the density of the reference station network. Comparing the denser reference network IGS08+APREF with the sparser reference network IGS08, significant improvement of the AMB fixed rate and coordinate RMS was obtained.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	315 - 320
Cite this article:	Jia, Minghai, Dawson, John, Moore, Michael, "AUSPOS: Geoscience Australia’s On-line GPS Positioning Service," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 315-320.
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