Modernising Australia’s Datum
Australia sits on one of the Earth’s fastest moving tectonic plates which has been moving 70 millimetres per year. By 2020, Australia will have moved 1.8 metres north east.
Physical locations in Australia are currently identified using coordinates set by GDA94 which are now being updated to Australia’s location in 2020 by Geoscience Australia and the Intergovernmental Committee on Surveying and Mapping (ICSM).
The change to GDA2020 will affect all organisations using spatial information across almost every industry. With increased GPS accuracy, migration to GDA2020 will be essential for precise real-time positioning.
Here are five key considerations for GDA2020 migration:
Take time to consider the implications of multiple datasets, departments and stakeholders before migrating your data.
Prepare for volume and complexity of vector data, multiple epochs of imagery, LiDAR and elevation datasets.
Update your map documents to reproject data and see how datasets overlap; recreate caches.
Create new datasets for vector data, Enterprise Geodatabases, File Geodatabases, shapefiles, CAD files.
Test and analyse the results at all stages to ensure your data has migrated correctly.
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