Impact of space-borne gravity gradiometer instrument filter on observation error and gravity field recovery performance for GOCE

  • P.N.A.M. Visser
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 128)


The primary instrument on board of the future ESA gravity field observing satellite GOCE is a gravity gradiometer. The observations from this instrument will be passed through a 7th-order Butterworth filter in order to reduce high-frequency noise and aliasing due to the output rate of 1 Hz. This filtering will distort the gravity gradients that are to be measured, which can however be largely compensated by a time tag correction. An assessment has been made of the remaining observation error after this correction and its impact on gravity field recovery performance. It has been found that the filtering leads to a very small increase of the gravity field recovery error budget at the medium to short wavelengths after application of the optimal time tag correction. Only at the very long wavelengths a slight degradation might take place. However, it is anticipated that the GOCE gravity field recovery will be improved/dominated by GPS satellite-to-satellite tracking observations at these long wavelengths.

Key words

space-borne gravity gradiometer Butterworth filter time tag correction gravity field recovery performance 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Colombo, O. L. (1984), The Global Mapping of Gravity With Two Satellites, vol. 7, no. 3, Netherlands Geodetic Commission, Publications on Geodesy, New Series.Google Scholar
  2. ESA (1999), Gravity Field and Steady-State Ocean Circulation Mission, Reports for Mission Selection, The Four Candidate Earth Explorer Core Missions, SP-1233(1), European Space Agency, July 1999.Google Scholar
  3. Kaula, W. M. (1966), Theory of Satellite Geodesy, Blaisdell Publishing Co, Waltham, Massachusetts.Google Scholar
  4. Lemoine, F. G., et al. (1997), The development of the NASA GSFC and NIMA Joint Geopotential Model, in International Association of Geodesy Symposia, Gravity, Geoid and Marine Geodesy, vol. 117, pp. 461–469, Springer-Verlag, Berlin.Google Scholar
  5. Oppenheim, A.V., and R.W. Schafer (1975), Digital Signal Processing, Englewood Cliffs, NJ: Prentice Hall.Google Scholar
  6. Rapp, R.H. (1979), Potential coefficient and anomaly degree variance modeling revisited, Report no. 292, Department of geodetic science, OSU, Ohio, Columbus.Google Scholar
  7. Reigber, Ch., G. Balmino, P. Schwintzer, R. Biancale, A. Bode, J.-M. Lemoine, R. Koenig, S. Loyer, H. Neumayer, J.-C. Marty, F. Barthelmes, F. Perosanz, and S.Y. Zhu (2002), A high quality global gravity field model from CHAMP GPS tracking data and Accelerometry (EIGEN-IS), Geophys. Res. Lett., 29(14), 1–4.CrossRefGoogle Scholar
  8. Reigber, Ch., P. Schwintzer, K.-H. Neumauer, F. Barthelmes, R. König, Ch. Förste, G. Balmino, R. Biancale, J.-M. Lemoine, S. Loyer, S. Bruinsma, F. Perosanz, and T. Fayard (2003), Earth Gravity Field Model EIGEN-2, Adv. Space Res., 31(8), 1883–1888.CrossRefGoogle Scholar
  9. Tapley, B.D., and C. Reigber (1999), GRACE: a satellite-to-satellite tracking geopotential mapping mission, in Bollettino di Geofisica Teorica ed Applicata, Vol. 40, No. 3–4, Sep.–Dec. 1999, Proceedings of the 2nd Joint Meeting of the International Gravity and the International Geoid Commission, Trieste 7–12 Sept. 1998, ISSN 0006-6729, edited by I. Marson and H. Sünkel, p. 291.Google Scholar
  10. Visser, P.N.A.M., R. Rummel, G. Balmino, H. Sünkel, J. Johannessen, M. Aguirre, P.L. Woodworth, C. Le Provost, C.C. Tscherning, and R. Sabadini (2002), The European Earth Explorer Mission GOCE: Impact for the Geosciences, in Ice Sheets, Sea Level and the Dynamic Earth, Geodynamics Series 29, American Geophysical Union, edited by J. Mitrovica and L.L.A. Vermeersen, pp. 95–107.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • P.N.A.M. Visser
    • 1
  1. 1.Delft Institute for Earth-Oriented Space ResearchDelft University of TechnologyDelftThe Netherlands

Personalised recommendations