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THE INTERNATIONAL DORIS SERVICE

THE INTERNATIONAL DORIS SERVICE. G. Tavernier (CNES) L. Soudarin (CLS) P. Willis (IGN/LAREG). C. Noll (GSFC/CDDIS) J. Ries (UTEX/CSR). DORIS SYSTEM. DORIS NETWORK. DORIS RECEIVERS FAMILY.

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THE INTERNATIONAL DORIS SERVICE

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  1. THE INTERNATIONAL DORIS SERVICE G. Tavernier (CNES) L. Soudarin (CLS) P. Willis (IGN/LAREG) C. Noll (GSFC/CDDIS) J. Ries (UTEX/CSR)

  2. DORIS SYSTEM

  3. DORIS NETWORK

  4. DORIS RECEIVERS FAMILY 1st generation 2nd generation miniaturized 2nd generation

  5. DORIS Missions (decided) 90 91 92 93 94 95 96 97 98 99 2000 2001 2002 SPOT-2 TOPEX-POSEIDON SPOT-3 SPOT-4 ENVISAT-1 JASON-1 SPOT-5 Precise Orbit Precise Beacon Location Gravity field Earth rotation Navigation

  6. DORIS system evolutions and perspectives • DIODE navigator • SPOT4 (March 1998) • JASON-1, ENVISAT, SPOT5 ... • 2nd generation receivers • dual channel • absolute phase measurement • miniaturized (Jason, SPOT5 …) • DIODE • 3rd generation ground beacons • shifted frequency • DORIS message & modulation on 2GHz channel

  7. DORIS and Nuvel-1 velocities

  8. DORIS, GPS and LASER velocities

  9. Velocities of 4 sites near EURASIAN boundariesrelative to the EURASIAN plate

  10. Velocities of MANILLE, CIBINONG & GUAM stationsrelative to the EURASIAN and PHILLIPINE plates

  11. Relative velocities to India plate in Nepal and Tibet

  12. Polar motion with DORIS data

  13. Geocenter coordinates derived from DORIS data

  14. International DORIS Service IDS • 4 techniques contributing to the IERS • International Services • I.G.S. • I.L.R.S. • I.V.S. • Benefit of an International DORIS service • IERS Directing Board • international scientific community • Call for Participation

  15. IDS Elements • Transmitting stations • On-board packages • Data Centers • archive and distribute data and products • Analysis Centers • products • intercomparisons • combined solutions • Central Bureau • coordination • management • Directing Board • policies • directives • Associate Members • Corresponding Members

  16. IDS Analysis Centers products • Precise ephemerides • Stations coordinates andvelocities (ITRF) • Earth rotation results • ionospheric information • Time varying geocentercoordinates • Earth’s gravity field • Intercomparisons and quality checks • combined solution (IERS)

  17. IDS Call for Participation • Call for Participation • IUGG99 - July 1999 • Letter of intent • 15 September 1999 • Formal proposals • 1 January 2000 • IDS steering committee • January 2000 • DORIS Days • 2-3 May 2000

  18. IDS contacts • CNES • DSO/ED/AL/MA - Bpi 2002 • 18, avenue Edouard Belin • 31401 TOULOUSE CEDEX 4 • FRANCE • Gilles Tavernier • Gilles.Tavernier@cnes.fr • Laurent Soudarin • Laurent.Soudarin@cls.fr • Pascal Willis • pascal.willis@ensg.ign.fr • DORIS Mail : http://lareg.ensg.ign.fr/DORIS/doris_mail.html • Carey Noll • noll@cddis.gsfc.nasa.gov • John Ries • ries@csr.utexas.edu

  19. International Doris Service - Call for Participation • Precise ephemerides • Stations coordinates andvelocities (ITRF) • Earth rotation results • ionospheric information • Time varying geocentercoordinates • Earth’s gravity field • Transmitting stations • On-board packages • Data Centers • Analysis Centers • Central Bureau • Directing Board

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