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Evaluation of Airborne Gravimetry Integrating GNSS and Strapdown INS Observations

  • Ch. Kreye
  • G.W. Hein
  • B. Zimmermann
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 129)

Abstract

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.

So the first part of the paper describes the system architecture, the test environment and the area of two finished flight test campaigns. The error models of GNSS and INS measurements are demonstrated and evaluated in regard to airborne gravimetry applications.

In this context the derivation of kinematical accelerations out of GNSS raw data is investigated. Thereby the additional performance potential of five GNSS receivers in the aircraft and twelve reference stations along the flight trajectory for acceleration determination is taken into account.

In the scope of integration filter design important aspects are emphasized concerning the low dynamic input data and the analogue processing of GNSS and INS data streams. Finally a first result of the observed gravity signal is presented.

Keywords

Airborne gravimetry acceleration determination strapdown inertial navigation system 

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8 References

  1. 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. 3.Google Scholar
  2. Czombo J. (1994). GPS accuracy test for airborne gravimetry, Proceedings of ION-GPS-1993 Technical Meeting, Salt Lake City, UtahGoogle 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 Träger durch GPS und digitale Filterung, Schriftenreihe des Studienganges Vermessungswesen, University FAF Munich, Heft 43, 1992Google Scholar
  5. 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
  6. Kleusberg A., Goodacre A., Beach R.J. (1989). On the use of GPS for airborne gravimetry, 5th Int. Geodetic Symposium on Satellite Positioning, Las Cruces, New Mexico, March 1989Google Scholar
  7. Kreye Ch., Hein G.W. (2003) GNSS based kinematic acceleration determination for airborne vector gravimetry—methods and results-, Proceedings of ION GPS/GNSS 2003 Portland, Oregon, September 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
  9. Wei M., Schwarz K.-P. (1994). An error analysis of airborne vector gravimetry, International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation, Banff, Alberta, Canada, 1994Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Ch. Kreye
    • 1
  • G.W. Hein
    • 1
  • B. Zimmermann
    • 1
  1. 1.Institute of Geodesy and NavigationUniversity FAF MunichNeubibergGermany

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