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    • DORIS Precise Positioning System : Description and Performance

    Paper number

    IAC-07-B2.1.08

    Author

    Mr. Daniel Dassaud, Centre National d'Etudes Spatiales (CNES), France

    Coauthor

    Mr. Albert Auriol, Centre National d'Etudes Spatiales (CNES), France

    Coauthor

    Mr. Bruno Besson, Centre National d'Etudes Spatiales (CNES), France

    Coauthor

    Mr. Christian Jayles, Centre National d'Etudes Spatiales (CNES), France

    Coauthor

    Mr Philippe Raizonville, Centre National d'Etudes Spatiales (CNES), France

    Coauthor

    Mr. Marc Bouchet, France

    Year

    2007

    Abstract
    Since 1990, DORIS has evolved from a core system initially devoted to altimetry and precise positioning to become a very complete system today, able to deliver both real-time products and very precise retrieved orbits, at the one-centimeter level.
The DORIS system is shortly described, as it is today after more than 15 years of development and operation. The main components of the system are detailed and their external and internal connections are described. The paper presents briefly the different DORIS products which are generated and used by the scientific community in the context of the International DORIS Service. 
Science application is mainly ocean topography and currents determination, in the frame of space altimetry missions such as TOPEX-POSEIDON in the past, JASON 1 and ENVISAT presently and JASON 2, SARAL… in the next future. DORIS is also the Precise Orbit Determination system of the ESA CRYOSAT Ice monitoring mission.
Furthermore DORIS is widely used by the scientific community for Earth geodesy studies, such as Earth rotation parameters determination, crust motion analysis…
The paper focuses then on the DORIS instrument, recalling the models which have been developed from the first SPOT 2 mission, for TOPEX-POSEIDON, for SPOT 3 and SPOT4, then for ENVISAT, JASON1 and finally the DGXX models which are to be flown on JASON2, CRYOSAT2, SARAL,….improving continuously the performance and reducing interface characteristics.
The major components of the DGXX instrument are presented : the RF chain, the phase loop, the signal processing, the antenna, the USO (ultra stable oscillator).The major instrument performance are listed and the overall interface data are given. Real time orbit determination algorithm (DIODE) is also mentioned.
Operational aspects of the system and data distribution process are briefly presented.
Finally the paper concludes with some views concerning potential future missions.
    Abstract document

    IAC-07-B2.1.08.pdf

    Manuscript document

    IAC-07-B2.1.08.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.