IAG 150 Years pp 175-181 | Cite as

DPOD2008: A DORIS-Oriented Terrestrial Reference Frame for Precise Orbit Determination

  • Pascal WillisEmail author
  • Nikita P. Zelensky
  • John Ries
  • Laurent Soudarin
  • Luca Cerri
  • Guilhem Moreaux
  • Frank G. Lemoine
  • Michiel Otten
  • Donald F. Argus
  • Michael B. Heflin
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 143)


While accuracy of tracking station coordinates is of key importance for Precise Orbit Determination (POD) for altimeter satellites, reliability and operationality are also of great concern. In particular, while recent ITRF realizations should be the most accurate at the time of their computation, they cannot be directly used by the POD groups for operational consideration for several reasons such as new stations appearing in the network or new discontinuities affecting station coordinates. For POD purposes, we computed a new DORIS terrestrial frame called DPOD2008 derived from ITRF2008 (as previously done by DPOD2005 with regards to ITRF2005). In a first step, we will present the method used to validate the past ITRF2008 using more recent DORIS data and to derive new station positions and velocities, when needed. In particular, discontinuities in DORIS station positions and/or velocities are discussed. To derive new DORIS station coordinates, we used recent DORIS weekly time series of coordinates, recent GPS relevant time series at co-located sites and also dedicated GPS campaigns performed by IGN when installing new DORIS beacons. DPOD2008 also contains additional metadata that are useful when processing DORIS data, for example, periods during which DORIS data should not be used or at least for which data should be downweighted. In several cases, a physical explanation can be found for such temporary antenna instability. We then demonstrate improvements seen when using different reference frames, such as the original ITRF2008 solution, for precise orbit determination of altimeter satellites TOPEX/Poseidon and Jason-2 over selected periods spanning 1993–2013.


DORIS Jason-2 Terrestrial Reference Frame Tracking network  



Part of this work was supported by the Centre National d’Etudes Spatiales (CNES). It is based on observations with DORIS receivers on the SPOT satellites, TOPEX/Poseidon, Envisat, Jason-2 and Cryosat-2. FG Lemoine and NP Zelensky were supported by the NASA Ocean Surface Topography Science Team (OSTST) and the NASA Interdisciplinary Research in Earth Science/Sea Level Change. The work of Don Argus and Mike Heflin was performed at the Jet Propulsion Laboratory, California Institute of Technology under contract with the National Aeronautics and Space Administration (NASA). This paper is IPGP contribution number 3477.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Pascal Willis
    • 1
    • 2
    Email author
  • Nikita P. Zelensky
    • 3
  • John Ries
    • 4
  • Laurent Soudarin
    • 5
  • Luca Cerri
    • 6
  • Guilhem Moreaux
    • 5
  • Frank G. Lemoine
    • 7
  • Michiel Otten
    • 8
  • Donald F. Argus
    • 9
  • Michael B. Heflin
    • 9
  1. 1.IGN, Direction de la Recherche et de l’EnseignementSaint-MandeFrance
  2. 2.IPGP, UMR 7154, Gravimétrie et géodésie, Université Paris Diderot, Sorbonne Paris CitéParisFrance
  3. 3.SGTGreenbeltUSA
  4. 4.University of Texas, Center for Space ResearchAustinUSA
  5. 5.CLSToulouseFrance
  6. 6.CNESToulouseFrance
  7. 7.GSFCGreenbeltUSA
  8. 8.ESADarmstadtGermany
  9. 9.JPL, CaltechPasadenaUSA

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