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Useful links
SP1 at www.icsm.gov.au/icsm/publications/sp1/sp1.html - the Inter-Governmental Advisory Committee on Surveying and Mapping (ICSM) publication, Standards and Practices for Control Surveys (SP1).
Geodesy and GPS (Geoscience Australia) at www.ga.gov.au/geodesy/ - the definitive source for a National perspective on Geodesy, GPS and related activities.
AUSPOS at www.ga.gov.au/geodesy/sgc/wwwgps/ - Geoscience Australia's online GPS processing service.
Exploring GPS (PDF 2.8mb) - Lands own widely acclaimed easy-to-read publication about GPS. It's free!
MapTools at www.maptools.com/ - a user-friendly site for understanding coordinate systems.
AUSGeoid at www.ga.gov.au/geodesy/ausgeoid/ - all you need to know about the latest Australian Geoid model.
ITRF at http://itrf.ensg.ign.fr/ - the International Terrestrial Reference System.
AGRF at www.ga.gov.au/oracle/geomag/agrfform.jsp - find out the current magnetic declination at any location using the Australian Geomagnetic Referenece Field online calculator.
NIS at www.navcen.uscg.gov/ the Navigation Information Service operated by the US Coast Guard as a point of contact for civil GPS users.
NGS Antenna Calibrations at www.ngs.noaa.gov/ANTCAL/index.shtml - United States, National Geodetic Survey GPS antenna calibration site.
