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        Gazette IERS Gazette IERS Gazette IERS Gazette IERS Gazette
                                    _______________________________________
        No 20, 26 September 1997   /
__________________________________/                 Contact: iers@obspm.fr
                                     ftp:  hpiers.obspm.fr (145.238.100.28)
                              WWW:  http://hpiers.obspm.fr
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        Title:   DORIS DAYS FIRST ANNOUNCEMENT
        Author:  Pascal Willis (IGN)


                              DORIS DAYS
                           27-29 April, 1998
                           Toulouse,  France

                          FIRST  ANNOUNCEMENT

Themes of DORIS Days
--------------------

DORIS program: 
  Missions, System, Equipment, Products

Precise Orbit Determination and Applications:
  Space Altimetry, Earth Gravity Models

Positioning and Applications
  Precise Positioning and Geodetic and Geophysical Applications

Autonomous Navigation and Other DORIS Applications:
  Autonomous Real-Time Navigation, Modelling (ionosphere, troposphere), 
  Other Missions

Evolution of the System and its Performances
  A round table will be organized to discuss prospects of evolution
  of the DORIS system. Aspects concerning the complementarity 
  of the DORIS system and the GPS will also be on the agenda.

Organization:
  Languages will be English and French (simultaneous interpreting
  available). Proceedings will be made available.

Abstract Proposals:
A4 format, one page maximum
to be sent before December 15, 1997
can be sent electronically to cta@pyrenet.fr

Registration fees: 1800 FF (VAT included)

Further information can be obtained from:
Corinne Saint-Paul (corinne.saintpaul@pyrenet.fr