Useful Links


Intergovernmental Committee on Surveying and Mapping (ICSM), Australia
GDA Technical Manuals
Download AGD66/84, GDA94 and GDA2020 transformation grid files

Natural Resources, Geodetic Survey Division, Canada
National Transformation version 2 (NTv2) - Products, Software, Grid files

Land Information, New Zealand
NZGD49 to NZGD2000 Transformations - Similarity Parameters; NTv2 Grid File

Department of Business, Queensland - Surveying
Queensland GDA transformations, GDAy software

Department of Primary Industries, Parks, Water and Environment, Tasmania
AGD66-GDA94-GDA2020 transformation parameters and grid files

Department of Finance, Services and Innovation, New South Wales
Spatial Services - Transformation methods

Geodetic Data Services, Landgate, Western Australia
WA Project Grids

Geoid-Ellipsoid Separation (undulation) and Deflections

Geoscience Australia (Australian Government)
Online AUSGeoid Computations
FTP download site for pre-2020 data files
AUSGeoid2020 Data Files - Copy the complete name of the required '.dat' file from its corresponding Key-tag bracket and append to the current page address to download for use in Geoida.

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