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Numerical Simulations for Geodetic Parameter Estimation from Space VLBI Data

  • Madhav N. Kulkarni
  • Praveen Pillai
  • Sándor Frey
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 128)

Abstract

Space Very Long Baseline Interferometry (SVLBI) is primarily a radio astronomical technique, which extends conventional VLBI baselines into the space. Its potential applications in Global Geodesy include interconnection of celestial and terrestrial reference frames, and orbit determination using the delay and delay rate observables. In the past two decades, there have been significant theoretical developments in this field. With the launch of the first SVLBI satellite of the VLBI Space Observatory Programme (VSOP), Japan, this technique has now been realized. The Geodesy Demonstration Experiment (GEDEX) is designed to explore the feasibility of the geodetic applications of SVLBI. In this paper, some results of the numerical simulations for geodetic parameter estimation from VSOP data are presented.

With the availability of real data from VSOP, it is necessary to repeat the precision analysis carried out earlier, in order to re-estimate the precision under realistic conditions. Numerical simulations for this purpose have been initiated, and the first results are presented in this paper. Conclusions are drawn, based upon the results obtained, and the implications for possible dedicated geodetic SVLBI missions in the future are discussed.

Keywords

Space VLBI GEDEX VSOP geodesy 

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References

  1. Ádáim J. (1990): Estimability of Geodetic Parameters from Space VLBI Observables, Report No. 406, Dept. of Geodetic Science & Surveying, The Ohio State University, Columbus, Ohio, USAGoogle Scholar
  2. Fejes I. (1999): The status and perspective of the Space VLBI Geodesy Demonstration Experiment (GEDEX), Adv. Space Res. 23, 781CrossRefGoogle Scholar
  3. Fejes I., Kawaguchi N., Mihály Sz. (1996): Space VLBI Geodesy: background of an experiment proposal, Astrophys. Space Sci. 239, 275CrossRefGoogle Scholar
  4. Frey S., Meyer U., Fejes I., Paragi Z., Chariot P., Biancale R. (2002): Geodetic space VLBI: the first test observations, Adv. Space Res. 30, 357CrossRefGoogle Scholar
  5. Hirabayashi H., Hirosawa H., Kobayashi H., et al. (1998): Overview and Initial Results of the Very Long Baseline Interferometry Space Observatory Programmed, Science 281, 1825CrossRefGoogle Scholar
  6. Kulkarni M.N. (1992): A Feasibility Study of Space VLBI for Geodesy & Geodynamics, Report No. 420, Dept. of Geodetic Science & Surveying, The Ohio State University, Columbus, Ohio, USAGoogle Scholar
  7. Kulkami M.N., Ádám J. (1993): A Sensitivity Analysis for Orbit Determination of SVLBI Satellites for Interconnection of Reference Frames, Acta Geod. Geophys. Mont. Hung. 28, 441Google Scholar
  8. Kulkarmi M.N., Ádám J., Fejes I., Frey S., Kampes B., Zheng Y., Hu X. (1998): Geodesy Demonstration Experiment (GEDEX) for Space VLBI: State of the Art and software Development. in: Geodesy on the Move — Gravity, Geoid, Geodynamics and Antarctica, eds. Forsberg R., Feissel M., Dietrich R., IAG Symposia 119, Springer-Verlag, Berlin-Heidelberg-New York, 383Google Scholar
  9. Kulkami M.N., Ádám J., Fejes I., Frey S., Paragi Z. (2002): Recent Developments in Space VLBI Geodesy Experiment (GEDEX), in: Vistas for Geodesy in the New Millennium, eds. Adim J., Schwarz K.-P., IAG Symposia 125, Springer-Verlag, Berlin-Heidelberg-New York, 18Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Madhav N. Kulkarni
    • 1
  • Praveen Pillai
    • 1
  • Sándor Frey
    • 2
  1. 1.Indian Institute of Technology BombayIndia
  2. 2.FÖMI Satellite Geodetic ObservatoryPencHungary

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