Comparative Analysis of the Molodensky and Kotsakis Ellipsoidal Heights Transformation between Geocentric and Non-Geocentric Datums Models

The non-availability of ellipsoidal heights local geodetic Datums has made it necessary for the application transformation models to available global obtain their respective theoretical in Datums. It is required know accuracy, as well reliability any model interest before its application. For that reason, this study comparatively analyses Molodensky and Kotsakis between geocentric non-geocentric determine model. Global Navigation Satellite System (GNSS) data used stations were processed World Geodetic 1984 (WGS84) datum geographic coordinates heights. coordinates, parameters WGS84 Minna applied compute Clarke 1880 stations. was a reference which compared discrepancies, residuals. residuals Root Mean Square Error (RMSE) computed RMSE, 1.244 m. concluded low reliability, accuracy might be result two rotation shift they are main differences models.