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Update of the French activities relevant to ILWS

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NASA funding for JHU/APL XGRE inst through SMEX/MoO AO- No information ... Geocentric, inertial, solar or along the velocity vector pointing ... – PowerPoint PPT presentation

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Title: Update of the French activities relevant to ILWS


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

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)gt space weather -
Solar oscillations from the ground -
diameter, limb shape and asphericity, - local
atmosphere turbulence
4
THE PICARD SPACECRAFT
SOVAP
PREMOS2
SODISM
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
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 gt2011

7
SMESE General View
LYOT
DESIR
HEBS
8

SMESE payload required performances
9
SMESE Firsts
  • 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
    Suns atmosphere.
  • Interest for Radiobiology

10
Mission sequence
PICARD
SMESE
TARANIS
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

12
(No Transcript)
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)
14
MYRIADE CAPACITY
  • Orbit inclination gt 20
  • Altitude 600kmlt gt1000km
  • 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 gt 60w (highly orbit
    dependant)
  • Mass memory 16 Gbits
  • S-Band 400 kb/s as baseline

15
MYRIADE OPTIONS
  • propulsion DV 80 m/s (DEMETER, TARANIS)
  • X-Band telemetry (gta 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

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)

DNEPR launch
ARIANE 5 launch
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?
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