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  Information - G1 Accuracy and stability of the International Terrestrial Reference Frame

Event Information
The development of the International Terrestrial Reference Frame (ITRF) has
progressed steadily as the space geodetic observing techniques have matured and
as the methods for forming multi-technique combinations have become more
rigorous. The expectations placed on the ITRF have kept pace with, or even
exceeded, the technical developments, with demands for continuing improvements
in accuracy and stability in order to detect ever more subtle features of the
Earth system. Detection of non-linear variations is particularly and
increasingly important, and comparisons with non-geometric measurements (e.g.,
GRACE gravity changes) more revealing. Meanwhile, recent experiences with
ITRF2004 and related efforts have exposed weaknesses in the global framework
or raised questions about the true accuracy of the space geodetic data.
Systematic errors of various types are particularly difficult to evaluate
without a standard more reliable than ITRF itself or its contributing

This session will focus on updated evaluations of the accuracy and stability
of ITRF as well as the space geodetic methods that contribute to it. Studies
of important systematic technique errors and methods to mitigate them are
strongly encouraged. Proposals for future improvements, new approaches, or
novel measurement types are especially sought.

Preliminary List of Solicited Speakers


General Statement
The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with regard to the material published.

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