IDS Workshop 
Venice 2006

IDS Workshop 2006Abstract

Analysis coordination and steps required towards generation of IDS products

Frank LEMOINE(1), Pascal WILLIS(2), Jean-Jacques VALETTE(3), Laurent SOUDARIN(3)

(1) NASA GSFC, Greenbelt, Maryland, USA
(2) Institut Geographique Nationale, Jet Propulsion Laboratory, Pasadena, California, USA
(3) CLS, Toulouse, France

Session theme: Stations coordinates


Since the official start of the International DORIS Service in 2003,
several key steps were taken. New groups have upgraded their software
package to process the DORIS data for geodesy and some have submitted
significant amount of results for test purposes. Several groups,
including the IDS Central Bureau, have successfully combined such
results to obtain combined products for station coordinates,
geocenter motion or polar motion. However, DORIS data processing
strategies are still different for each Analysis Centers, potentially
creating inconsistencies and discontinuities in combined time series.
Furthermore, only one individual solution (IGN/JPL) is currently
available soon after the data are delivered and no combined products
is generated on an operational basis. The goal of this paper is to
present key problems that are facing Analysis Centers and Combination
Centers when generating their products. Some recommendations will be
made concerning the DORIS data analysis strategy. We will also show
problems that need to be resolved in the future in order to produce
accurate, reliable and timely IDS products, resulting from a
combination of individual solutions.

Corresponding author:

    Dr Frank LEMOINE
    Space Geodesy Laboratory, NASA Goddard Space Flight Center
    Code 697
    20771 Greenbelt, Maryland
    Phone: 301-614-6109
    Fax: 301-614-6099


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