Journal of Geodesy

, Volume 83, Issue 6, pp 583–589 | Cite as

Fitting gravimetric geoid models to vertical deflections

  • W. E. FeatherstoneEmail author
  • D. D. Lichti
Short Note


Regional gravimetric geoid and quasigeoid models are now commonly fitted to GPS-levelling data, which simultaneously absorbs levelling, GPS and quasi/geoid errors due to their inseparability. We propose that independent vertical deflections are used instead, which are not affected by this inseparability problem. The formulation is set out for geoid slopes and changes in slopes. Application to 1,080 astrogeodetic deflections over Australia for the AUSGeoid98 model shows that it is feasible, but the poor quality of the historical astrogeodetic deflections led to some unrealistic values.


Gravimetric geoid errors Vertical deflections Vertical datum errors 


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Western Australian Centre for Geodesy, The Institute for Geoscience ResearchCurtin University of TechnologyPerthAustralia
  2. 2.Department of Geomatics Engineering, The Centre for Bioengineering Research and Education, Schulich School of EngineeringThe University of CalgaryCalgaryCanada

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