Fitting gravimetric geoid models to vertical deflections

Featherstone, Will; Lichti, D.

doi:10.1007/s00190-008-0263-4

135139_18397_VDfittingRevisedFinal.pdf (162.3Kb)

Access Status

Open access

Authors

Featherstone, Will

Lichti, D.

Date

2009

Type

Journal Article

Metadata

Show full item record

Citation

Featherstone, Will and Lichti, Derek. 2009. Fitting gravimetric geoid models to vertical deflections. Journal of Geodesy. 83 (6): pp. 583-589.

Source Title

Journal of Geodesy

DOI

10.1007/s00190-008-0263-4

ISSN

09497714

Faculty

Department of Spatial Sciences

Faculty of Science and Engineering

WA School of Mines

Remarks

The final publication is available at Springer via http://link.springer.com/

URI

http://hdl.handle.net/20.500.11937/7160

Collection

Curtin Research Publications

Abstract

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 1080 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.