A method to validate gravimetric-geoid computation software based on Stokes's integral formula
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A method is presented with which to verify that the computer software used to compute a gravimetric geoid is capable of producing the correct results, assuming accurate input data. The Stokes, gravimetric terrain correction and indirect effect formulae are integrated analytically after applying a transformation to surface spherical coordinates centred on each computation point. These analytical results can be compared with those from geoid computation software using constant gravity data in order to verify its integrity. Results of tests conducted with geoid computation software are presented which illustrate the need for integration weighting factors, especially for those compartments close to the computation point.
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A Synthetic Earth Gravity Model Designed Specifically for Testing Regional Gravimetric Geoid Determination AlgorithmsBaran, Ireneusz; Kuhn, Michael; Claessens, Sten; Featherstone, Will; Holmes, S.; Vanicek, P. (2006)A synthetic [simulated] Earth gravity model (SEGM) of the geoid, gravity and topography has been constructed over Australia specifically for validating regional gravimetric geoid determination theories, techniques and ...
Featherstone, Will; Olliver, J. (1997)A method is presented with which to verify that the computer software used to compute a gravimetric geoid is capable of producing the correct results, assuming accurate input data. The Stokes, gravimetric terrain correction ...
Testing Stokes-Helmert geoid model computation on a synthetic gravity field: experiences and shortcomingsVaníček, P.; Kingdon, R.; Kuhn, Michael; Ellmann, A.; Featherstone, Will; Santos, M.; Martinec, Z.; Hirt, Christian; Avalos, D. (2013)We report on testing the UNB (University of New Brunswick) software suite for accurate regional geoid model determination by use of Stokes-Helmert’s method against an Australian Synthetic Field (ASF) as “ground truth”. ...