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Evaluation of the Quasigeoid Models EGG97 and EGG07 with GPS/levelling Data for the Territory of Bulgaria

  • E. PenevaEmail author
  • I. Georgiev
Conference paper
  • 2k Downloads
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 135)

Abstract

The paper discusses the comparison of the quasigeoid models EGG97 and EGG07 for the territory of Bulgaria with GPS/levelling data. The models have been compared with precise GPS and levelling measurements from National Geodetic Network with regular distribution of stations. Height anomaly differences between the models and GPS/levelling are in the range of 0.693 m for EGG97 and 0.666 m for EGG07. The comparison is made with CMPGS program, developed by H. Denker. A bias as well as bias plus tilt fit are done. The rms of the unit weight after the fitting is ± 0.094 m.

Keywords

EGG97 EGG07 GPS/levelling 

Notes

Acknowledgements

The authors would like to thank for supplying with GPS/levelling data to the Bulgarian Military Geographic Service, for supplying gravity data to the National Geodetic, Cartographic and Cadastre Agency, and Heiner Denker for his assistance with software, data and recommendations.

References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Department of GeodesyUniversity of Architecture, Civil Engineering and GeodesySofiaBulgaria
  2. 2.Central Laboratory of GeodesyBulgarian Academy of ScienceSofiaBulgaria

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