EPSG:CODE

GDA94 to GDA94 + AHD height (1)

EPSG:4939 → EPSG:9464

Coordinate Reference Systems

Source CRS
EPSG:4939
GDA94
Geographic 3D
Target CRS
EPSG:9464
GDA94 + AHD height
Compound

Remarks

Reversible alternative to GDA94 to AHD height (1) and GDA94 to AHD (Tasmania) height (2) (codes 5656 and 5657). Uses AUSGeoid09 model which uses bi-cubic interpolation; bi-linear interpolation will give results agreeing to within 1cm 99.97% of the time.

Frequently Asked Questions

What is the accuracy of the GDA94 to GDA94 + AHD height transformation?

This transformation (EPSG:9467) has an accuracy of 0.15m using the Geog3D to Geog2D+GravityRelatedHeight (AUSGeoidv2) method. Area of use: Australia - onshore.