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dc.contributor.authorClaessens, Sten
dc.contributor.authorFeatherstone, Will
dc.contributor.editorFernando Sanso
dc.identifier.citationClaessens, Sten and Featherstone, Will. 2005. Computation of Geopotential Coefficients from Gravity Anomalies on the Ellipsoid, in Fernando Sanso (ed), IAG General Assembly, Jun 30 2003, pp. 459-464. Sapporo, Japan: Springer.

One of the most important stages in the computation of a global geopotential model is the computation of the spherical harmonic coefficients from gravity anomalies on the normal ellipsoid. None of the existing methods provides an exact solution, and all show severe shortcomings in the high degrees of the spectrum. In this paper, a new, theoretically exact method is proposed, which is moreover easily applicable up to very high degree and order (2160 and beyond). The solution of the geopotential coefficients is presented as a weighted sum over 'spherically approximated' coefficients of equal order, where the gravity anomalies are presumed to reside on a sphere.The weights depend solely upon the degree and order of the coefficient and the definition of the normal ellipsoid and its gravity field. Numerical comparisons with existing methods show substantial differences, especially in the high degrees, which can be explained by the fact that all previous methods are of limited accuracy.

dc.subjectgeopotential models
dc.subjectspherical harmonics
dc.subjectellipsoidal boundary value problem
dc.titleComputation of Geopotential Coefficients from Gravity Anomalies on the Ellipsoid
dc.typeConference Paper
dcterms.source.titleA Window on the Future of Geodesy: Proceedings of the International Association of Geodesy
dcterms.source.seriesA Window on the Future of Geodesy: Proceedings of the International Association of Geodesy
dcterms.source.conferenceIAG General Assembly
dcterms.source.conference-start-dateJun 30 2003
dcterms.source.conferencelocationSapporo, Japan
dcterms.source.placeHeidelberg, Germany

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curtin.accessStatusFulltext not available
curtin.facultyDepartment of Spatial Sciences
curtin.facultyFaculty of Science and Engineering
curtin.facultyWA School of Mines

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