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Evaluation of Airborne Vector Gravimetry Using GNSS and SDINS Observations

  • Christian Kreye
  • Günter W. Hein
  • Bernd Zimmermann
Chapter

Summary

Airborne gravimetry systems provide the most economical way to improve the spatial resolution of gravity data measured by satellite missions. So the paper deals with the presentation of a modern airborne gravitymeter designed, developed and tested at the University FAF Munich. The specific forces are measured by a high precision strapdown INS and the kinematical accelerations are derived using numerous differential GNSS observations.

The first part of the paper describes the system architecture and the aircraft installation. Then the data processing methods are mentioned including the filtering and derivation procedures, the computation of aircraft accelerations and different algorithms for providing the gravity profiles. Static tests in a laboratory environment approve the error budget of two sensor types on acceleration level.

The main part of the article contains the description of practical test flights carried out in the middle of Germany and the corresponding results. An evaluation of the current system performance is possible. Final remarks refer to the planned improvements until the end of the project.

Key words

Airborne gravimetry acceleration determination strapdown inertial navigation system 

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References

  1. Bruton A M, Glennie C L, Schwarz K-P (1999) Differentiation for high precision GPS velocity and acceleration determination. GPS Solutions 1999 Vol.2, No.4Google Scholar
  2. Bruton A M, Schwarz K P, Ferguson S, Kern M, Wei M (2002) Deriving acceleration from DGPS: Towards higher resolution applications for airborne gravimetry. GPS Solutions, Vol.5, No.3Google Scholar
  3. Eissfeller B, Spietz P (1989) Basic filter concepts for the integration of GPS and an inertial ring laser gyro strapdown system. Manuscripta Geodetica 14:166–182Google Scholar
  4. Hehl K (1992) Bestimmung von Beschleunigungen auf einem bewegten Traeger durch GPS und digitale Filterung. Schriftenreihe des Studiengangs Vermessungswesen, University FAF Munich, Heft 43Google Scholar
  5. Jekeli C (1992) Vector gravimetry using GPS in free-fall in an earth fixed frame. Bulletin Geodesique 66:54–61CrossRefGoogle Scholar
  6. Jekeli C (1994) On the computation of vehicle accelerations using GPS phase measurements. International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation, Banff, Alberta, Canada, 1994Google Scholar
  7. Kreye Ch, Hein G W (2003) GNSS Based Kinematic Acceleration Determination for Airborne Vector Gravimetry — Methods and Results. Proceedings of ION GPS 2003, Portland, Oregon, 2003Google Scholar
  8. Kwon J H, Jekeli C (2001) A new approach for airborne vector gravimetry using GPS/INS. Journal of Geodesy 74, 690–700CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Christian Kreye
    • 1
  • Günter W. Hein
    • 1
  • Bernd Zimmermann
    • 1
  1. 1.Institude of Geodesy and NavigationUniversity FAF MunichNeubibergGermany

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