Digital Elevation Model data record the terrain height variations from the processed point-located data recorded on an airborne geophysical survey. The aircraft altimeter data records the height of the aircraft above the ground and the aircraft GPS records the height of the aircraft above the ellipsoid. Subtracting the two values enables the height of the terrain beneath the aircraft relative to the ellipsoid to be calculated. This ellipsoidal terrain height is corrected for the variation between the ellipsoid and the geoid (the n-value correction) to produce terrain heights relative to sea level.
Australian and New Zealand Standard Research Classification (ANZSRC)
Geophysical Data Collection
Airborne Digital Data
Australian Government Security ClassificationSystem
Classification - unclassified
Special, MOU, etc.
Access - license
Use - license
The DEM data of Australia contains elevation data recorded during several airborne geophysical surveys by Commonwealth, State and Northern Territory Governments, and the private sector. Additional data from open source are also added to the collection.
Australian Geophysical Data Collection
UUID - 0a83ee36-d332-4669-a9fc-dfa7cec5c703,
eCat ID - 100444
Downloads and Links
The DEM data of Australia contains elevation data recorded during several airborne geophysical surveys by Commonwealth, State and Northern Territory Governments, and the private sector, as well as some open source data.