Advertisement

Towards a Combination of Space-Geodetic Measurements

  • A. PolletEmail author
  • D. Coulot
  • N. Capitaine
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 136)

Abstract

The International Terrestrial Reference Frame (ITRF), the Earth Orientation Parameter (EOP) time series, and the International Celestial Reference Frame are obtained separately and may thus present inconsistencies. To solve this problem, a first step has been made with the latest ITRF realization (ITRF2005), which has been computed, for the first time, with consistent EOP time series. Another approach to better understand this issue is to directly estimate, in the same process, station positions and EOP time series, from all the space-geodetic measurements.

In the framework of the French Groupe de Recherche de Géodésie Spatiale (GRGS) activities, this latter approach has been studied for several years. For this purpose, the observations of VLBI, SLR, GPS, and DORIS techniques are combined using the same models and software for all the individual data processing.

In this paper, we study methodological issues regarding the definition and the consistency of the weekly combined terrestrial frames.

Keywords

Transformation Parameter Earth Orientation Parameter Minimum Constraint International Terrestrial Reference Frame VLBI Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Altamimi Z, Collilieux X, Legrand J, Boucher C (2007) ITRF2005: a new release of the international terrestrial reference frame based on time series of station positions and earth orientation parameters. J Geophys Res 112:B09401. doi: 10.1029/2007JB004949 CrossRefGoogle Scholar
  2. Andersen PH (2000) Multi-level arc combination with stochastic parameters. J Geod 74:531–551. doi: 10.1007/s001900000115 CrossRefGoogle Scholar
  3. Bizouard C, Gambis D (2009) The combined solution C04 for Earth orientation parameters consistent with International Terrestrial Reference Frame 2005. In: Proceedings of IAG Symposia, 134, pp 265–270. doi: 10.1007/978-3-642-00860-3Google Scholar
  4. Bourda G, Charlot P, Biancale R (2007) GINS: a new tool for VLBI geodesy and astrometry. In: Proceedings of the 18th European VLBI for Geodesy and Astrometry (EVGA) Working Meeting, 79, Vienna, pp 59–63, ISSN 1811–8380Google Scholar
  5. Bruinsma S, Lemoine J-M, Biancale R, Valès N (2009) CNES/GRGS 10-day gravity field models (release 2) and their evaluation. Adv Space Res 45(2010):587–601. doi: 10.1016/j.asr.2009.10.012 Google Scholar
  6. Coulot D, Berio P, Biancale R, Loyer S, Soudarin L, Gontier A-M (2007) Towards a direct combination of space-geodetic techniques at the measurement level: methodology and main issues. J Geophys Res 112:B05410. doi: 10.1029/2006JB004336 CrossRefGoogle Scholar
  7. Ge M, Gendt G, Dick G, Zhang FP, Reigber C (2005) Impact of GPS satellite antenna offsets on scale changes in global network solutions. Geophys Res Lett 32:L06310. doi: 10.1029/2004GL0222241414 CrossRefGoogle Scholar
  8. Gobinddass ML, Willis P, De Viron O, Sibthorpe A, Zelensky NP, Ries JC, Ferland R, Bar-Sever Y, Diament M, Lemoine FG (2009) Improving DORIS geocenter time series using an empirical rescaling of solar radiation pressure models. Adv Space Res 44(11):1279–1287. doi: 10.1016/j.asr.2009.08.004 CrossRefGoogle Scholar
  9. Guo J, Langley RB (2004) A new tropospheric propagation delay mapping function for elevation angles down to 2 degrees. In: Proceedings of ION GPS 2003, Portland, ORGoogle Scholar
  10. Lyard F, Lefevre F, Letellier T, Francis O (2006) Modelling the global ocean tides: modern insights from FES2004. Ocean Dyn 56:394–415. doi: 10.1007/s10236-006-0086-x CrossRefGoogle Scholar
  11. McCarthy DD, Petit G (2004) IERS conventions (2003). IERS technical note 32, Verlag des Bundesamts für Kartographie und Geodäsie, Frankfurt, ISBN 3-89888-884-3Google Scholar
  12. Mendes VB, Pavlis EC (2004) High-accuracy zenith delay prediction at optical wavelengths. Geophys Res Lett 31:L14602. doi: 10.1029/2004GL020308 CrossRefGoogle Scholar
  13. Mendes VB, Prates G, Pavlis EC, Pavlis DE, Langley RB (2002) Improved mapping functions for atmospheric refraction correction in SLR. Geophys Res Lett 29(10):1414. doi: 10.1029/2001GL014394 CrossRefGoogle Scholar
  14. Sillard P (1999) Modélisation des systèmes de référence terrestres. Contribution théorique et méthodologique. PhD thesis, Observatoire de Paris, ParisGoogle Scholar
  15. Sillard P, Boucher C (2001) A review of algebraic constraints in terrestrial reference frame datum definition. J Geod 75:63–73CrossRefGoogle Scholar
  16. Thaller D, Krügel M, Rothacher M, Tesmer V, Schmid R, Angermann D (2007) Combined Earth orientation parameters based on homogeneous and continuous VLBI and GPS data. J Geod 81:529–541CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institut Géographique National, LAREG & GRGSChamps-sur-Marne, Marne-la-ValléeFrance
  2. 2.SYRTE, Observatoire de Paris, CNRS, UPMC & GRGSParisFrance

Personalised recommendations