Geographic3D to GravityRelatedHeight
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Geographic3D to GravityRelatedHeight Open
Coordinate Operation Method Details [VALID]
Name: Geographic3D to GravityRelatedHeight
Code: 1136
Operation is Reversible: No
Formula: See EPSG Guidance Note 7-2 (IOGP Report 373-07-02), available at https://epsg.org under Support Documentation / Guidance notes.
Example: See EPSG Guidance Note 7-2 (IOGP Report 373-07-02).
Method
Parameters:
Parameter Name Parameter Code Sign reversal Parameter Description
Geoid height 8604 Distance to a geoid surface from an ellipsoid surface along a line perpendicular to the ellipsoid surface, positive when the geoid is above (outside of) the ellipsoid. "Geoid height" is used loosely in the parameter name. If the offset is between the ellipsoid and the geoid then the offset will be the geoid separation N. When the offset is between the ellipsoid and a realisation of the geoid through a vertical datum then the offsets C will form a height correction surface. A height correction surface differs from a geoid model by small amounts due to the difference between the geoid and the actual datum surface, as well as some other assumptions regarding the gravity field.