update of the french activities relevant to ilws jean-yves prado, cnes

Update of the French activitiesrelevant to ILWS

Jean-Yves Prado, CNES

ILWS Uppsala, 12 june, 2007 2

Report from CNES

■ STEREO

■ PICARD ■TARANIS■SMESE

■ Technical support to PHOIBOS proposal to Cosmic Vision

■ Data Issues

■ Back-up slides on MYRIADE


STEREO

• STEREO Space Weather beacon Ground Station => nov ’07

• new website Radio monitoring @ http://secchirh.obspm.fr

STEREO Public Relations


PICARD Mission

PREMOS2

SOVAP

SODISM

Phase C/D in progressLaunch planned for 2nd quarter 2009


from 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

PICARD SCIENTIFIC PRODUCTS


TARANIS

• Dedicated to understandingAtmosphere/ionosphere/magnetospherecoupling (sprites, elves, blue jets…)Microcameras + photometer -MCM- CEA (+JP)EM measurements -IEM- LPCE (+PL,TCH)

X-gamma Detector -XGD- LANL (USA), DNSC (DK)Detector of high Energy ElectronsCESR (+TCH)

• Quasi Sun Synchronous Orbit (2hrs LT drift/year)

Phase B will start in septemberLaunch expected for 2011


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


SMESE

DESIR

LYOT

HEBS

Phase A ended (PRR) on 7 june, 2007 Launch objective 2012-2013


SMESE payload required performances

Wavelength/Energy

Field of View

Spatial resolution

Cadence

LYOT : L imager

121.6 nm Full Disk 1.1 arcsec 10 s

LYOT :L coronagraph

121.6 nm 5*5 solar radii

2.3 arcsec 20 s

DESIR :Infra-red Telescope

35 ≤ 1 ≤ 80 microns

100≤ 2 ≤ 250 microns

Full Disk 50 arcsec at 35 microns

100 ms

HEBS 10-500keV200keV-10MeV10MeV-600MeV

Full Disk Full disk 1 s, down to 32 ms


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 Sun’s atmosphere.


PICARD SMESE

PROGRAMMATIC SCHEME

TARANIS


■ Following an open AO to the French Scientific community

■ Mission scheme

■ See presentation at IHY 2nd European General Assembly (Turin, 18-23 june)

Technical support to PHOIBOS proposal


Data Issues

• Support from CNES to thematic data centres (CDPP, MEDOC)

• Data sets from CNES supported missions/instrument data + some others• Support to development of tools • POC: contact C. Jacquey @CDPP, K. Bocchialini @MEDOC

• Data policy for PI missions : OK for openness, rapidity on a case by case basis• quality/reliability issues• priority to the PI for use of data • matrix of access rights defined by Scientific Committee of the relevant mission

• Typicaly: Mission PI/CoIs all rights on all dataInstrument Co-Is, Guest Investigators restricted rightsPublic: access to all data after a TBD delay (6 months to 2 years)


MYRIADE SERIES

• More than 20 spacecraft based on the same bus and systems in flight or in preparation

60x60x50 cm bus

S-Band TTC (Kiruna/Toulouse)

Bus waiting row


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


MYRIADE OPTIONS

■ propulsion V ~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


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


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?

FURTHER INTERNATIONAL COOPERATION

update of the french activities relevant to ilws jean-yves prado, cnes

Documents

high energy electrons

high energy electrons

magnetosphere em waves

measurements of solar

source mechanisms em

high time resolution

suns atmosphere

upper atmosphere