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dc.contributor.authorDarbeheshti, Neda
dc.contributor.authorFeatherstone, Will
dc.identifier.citationDarbeheshti, N. and Featherstone, W.E. 2010. Tuning a gravimetric quasigeoid to GPS-levelling by non-stationary least-squares collocation. Journal of Geodesy. 84 (7): 419-431.

This paper addresses implementation issues in order to apply non-stationary least-squares collocation (LSC) to a practical geodetic problem: fitting a gravimetric quasigeoid to discrete geometric quasigeoid heights at a local scale. This yields a surface that is useful for direct GPS heighting. Non-stationary covariance functions and a nonstationary model of the mean were applied to residual gravimetric quasigeoid determination by planar LSC in the Perth region ofWestern Australia. The non-stationarymodel of the mean did not change the LSC results significantly. However, elliptical kernels in non-stationary covariance functions were used successfully to create an iterative optimisation loop to decrease the difference between the gravimetric quasigeoid and geometric quasigeoid at 99 GPS-levelling points to a user-prescribed tolerance.

dc.publisherSpringer - Verlag
dc.subjectGeometric quasigeoid
dc.subjectGravimetric quasigeoid
dc.subjectElliptical kernel convolution
dc.subjectLeast squares collocation (LSC)
dc.subjectNon-stationary covariance functions
dc.titleTuning a gravimetric quasigeoid to GPS-levelling by non-stationary least-squares collocation
dc.typeJournal Article
dcterms.source.titleJournal of Geodesy

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curtin.accessStatusOpen access
curtin.facultyDepartment of Spatial Sciences
curtin.facultyFaculty of Science and Engineering
curtin.facultyWA School of Mines

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