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Update of the French activities relevant to ILWS

Update of the French activities relevant to ILWS. Jean-Yves Prado, CNES. Status of CNES projects. PICARD Phase C/D in progress Launch planned for june 2009 Science Workshop at Yale in March, next in Toronto in July TARANIS Phase B will end in september

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Update of the French activities relevant to ILWS

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  1. Update of the French activitiesrelevant to ILWS Jean-Yves Prado, CNES

  2. Status of CNES projects • PICARD • Phase C/D in progress • Launch planned for june 2009 • Science Workshop at Yale in March, next in Toronto in July • TARANIS • Phase B will end in september • NASA funding for JHU/APL XGRE inst through SMEX/MoO AO- No information • Launch expected for 2011-12 • SMESE • Phase A ended in May ’08 • Well attended Science Workshop in Paris last March • Next step to be discussed during CNES ‘SPC’ this week – 4 options presented • Launch objective 2012-2013 • ALL BASED ON MYRIADE PLATEFORMES ILWS Prague, 11-12 June, 2008

  3. PICARD SCIENTIFIC PRODUCTS in orbit: - Diameter, limb shape and asphericity in the continuum - TSI (x2) - 5 spectral channels (215,393, 535, 607, 782 nm) - Activity (images at 215 nm and Ca II)=> space weather - Solar oscillations from the ground : - diameter, limb shape and asphericity, - local atmosphere turbulence ILWS Prague, 11-12 June, 2008

  4. THE PICARD SPACECRAFT SOVAP PREMOS2 SODISM ILWS Prague, 11-12 June, 2008

  5. TARANIS OBJECTIVES Description - characterization of the sprites and associated emissions, measurements of their occurrence frequency and of their distribution at the scale of the earth. (caméras, EM waves, X and  spectra, high energy electrons) - study of the effects of the magnetic latitude and volcanic activity Implied mechanisms - determination of the nature of the triggering phenomena(cosmic radiation) - determination of the source mechanisms(EM waves, X and  spectra, high energy electrons) - study of the nature of the explosive dissipation of energy in the ionosphere and magnetosphere(EM waves, X and  spectra, high energy electrons) Global impact - determination of the effects on the upper atmosphere, ionosphere and magnetosphere(EM waves, high energy electrons, associated ground based measurements, other satellites) - evaluation of the coupling atmosphere -  ionosphere - magnetosphere and inter-planetary medium ILWS Prague, 11-12 June, 2008

  6. TARANIS • Dedicated to understanding • Atmosphere/ionosphere/magnetosphere • coupling (sprites, elves, blue jets…) • Microcameras + photometer -MCM-CEA (+JP) • EM measurements -IEM- LPCE (+PL,TCH) • X-gamma Detector -XGD- JHU/APL (USA), DNSC (DK) • Detector of high Energy ElectronsCESR (+TCH) • Quasi Sun Synchronous Orbit (2hrs LT drift/year) • Phase B to end in September • XGRE funding from NASA yet not known • Launch >2011 ILWS Prague, 11-12 June, 2008

  7. SMESE General View LYOT DESIR HEBS ILWS Prague, 11-12 June, 2008

  8. SMESE payload required performances ILWS Prague, 11-12 June, 2008

  9. SMESEFirsts • First combined imaging (disk, corona) in Ly  with high time resolution and sensitivity to trace the development of CMEs in the low corona + first polarimetric corona measurements, • First ever measurements of solar flares in the far infrared, key range for relativistic leptons and chromospheric plasma heated during flares, • First hard X-ray/gamma ray spectrometry at the highest energies ever attained with a solar-dedicated instrument, to study the most energetic electrons and nuclear processes in the Sun’s atmosphere. • Interest for Radiobiology ILWS Prague, 11-12 June, 2008

  10. Mission sequence PICARD SMESE TARANIS ILWS Prague, 11-12 June, 2008

  11. Others • STEREO Space Weather beacon Ground Station operational since Feb. • Operational coordination between DEMETER and C/NOFS • Radiation monitors onboard SAC-C, SAC-D, JASON 2 ILWS Prague, 11-12 June, 2008

  12. ILWS Prague, 11-12 June, 2008

  13. MYRIADE SERIES • More than 20 spacecraft based on the same bus and systems • in flight or in preparation Bus waiting row 60x60x50 cm bus S-Band TTC (Kiruna/Toulouse) ILWS Prague, 11-12 June, 2008

  14. MYRIADE CAPACITY • Orbit inclination > 20° • Altitude 600km< >1000km • DNEPR launcher as the reference • Geocentric, inertial, solar or along the velocity vector pointing • Pointing precision of 0.1 ° (actuation), 5.10-3° (knowledge) • Attitude control system in nominal mode uses a stellar sensor, four reaction wheels and three magnetic torquers • up to 80 kg mass allocation to the P/L (when no propulsion/TM-X) • Power available to the P/L > 60w (highly orbit dependant) • Mass memory 16 Gbits • S-Band 400 kb/s as baseline ILWS Prague, 11-12 June, 2008

  15. MYRIADE OPTIONS • propulsion DV ~80 m/s (DEMETER, TARANIS…) • X-Band telemetry (>a few Gbits/day) TM rate 16-50 Mb/s depending on the ground station G/T • additional sun pointing device (PICARD, LYOT/SMESE) • quick deorbit kit under study ILWS Prague, 11-12 June, 2008

  16. A few examples of the MYRIADE versatility • DEMETER, TARANIS waves and particle instruments • PARASOL Lidar for atmospheric science • PICARD, SMESE Solar observation • MICROSCOPE Fundamental physics • ARGOS Localization • ESSAIM, SPIRALE, ELINT Defense • … • commercial availability of the bus (ASTRIUM, AAS) DNEPRlaunch ARIANE 5 launch ILWS Prague, 11-12 June, 2008

  17. FURTHER INTERNATIONAL COOPERATION Earth Observation as a paradigm? • a unique object, many possible instruments • curiosity driven science in competitition with monitoring science • shift from mammoth s/c (ENVISAT…) to series of small specialized satellites A Solar Train? ILWS Prague, 11-12 June, 2008

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