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Geodetic Datums

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• International Terrestrial Reference Frame (ITRF) to GDA94 Coordinate Transformations [PDF 414KB]

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Geocentric Datum of Australia (GDA)

Learn about Australia's Geocentric Datum and its purpose.

Geoid

Find out about existing Geoid model and data and techniques it uses.

Australian Height Datum (AHD)

Information on height datum used by Australia and how it was developed.

Historical Datums of Australia

Datums used previously.

Other Datums

Learn about the differences between datums.

Topic contact: geodesy@ga.gov.au Last updated: November 21, 2012