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CNES program status

CNES program status. Prepared by E. Thouvenot, CNES August 2007. CNES Strategy in Oceanography. Contribute to operational outcome of altimetry :  TOPEX/POSEIDON => JASON1 => JASON2/OSTM =>JASON3 ERS 1 & 2 => ENVISAT => SENTINEL3 + CORIOLIS, MERCATOR/COO/ECOMF, ...

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CNES program status

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  1. CNES program status Prepared by E. Thouvenot, CNES August 2007

  2. CNES Strategy in Oceanography • Contribute to operational outcome of altimetry :  TOPEX/POSEIDON => JASON1 => JASON2/OSTM =>JASON3 ERS 1 & 2 => ENVISAT => SENTINEL3 + CORIOLIS, MERCATOR/COO/ECOMF, ... • Continue research activities for future altimetry missions/instruments (AltiKa, WSOA, Water,…) • Contribute to space measurements of other ocean physical parameters : • - salinity : SMOS, CNES contribution to ESA project • - directional wave spectrum (SWIM/CFOSAT) - ocean colour (SSO or GEO) • Prepare ocean applications of ORFEO (Cosmo SkyMed/Pleiades) : mainly coastal applications CNES program status – GODAE meeting, august 2007

  3. SPOT2 (CNES) DORIS SPOT3 (CNES) DORIS SPOT4 (CNES) DORIS SPOT5 (CNES) DORIS CRYOSAT (ESA) DORIS Complementing mission mesoscale, ice Reference mission Ocean Large scale Earth reference system 1990 CNES involvment in altimetry experiment ERS-1 (ESA) Altimeter algorithm TOPEX/POSEIDON (CNES/NASA) Launcher DORIS & POSEIDON Mission Center ERS-2 (ESA) 2000 ENVISAT (ESA) DORIS Altimeter Processing Archive & distrib. Jason-1 (CNES/NASA) Satellite bus DORIS & POSEIDON Control & Mission Center 2005 HY-2 (CNSA) DORIS ? Jason-2 / OSTM (CNES/NASA/EUMETSAT/NOAA) Satellite bus DORIS & POSEIDON Control & Mission Center ALTIKA/SARAL (CNES/ISRO) Altimeter, radiometer, DORIS, Lra Process, archive & distrib. PLEIADES (CNES) DORIS 2010 CRYOSAT2 (ESA) DORIS SALP : Altimetry and precise positioning service operational MERCATOR : assimilation, forecast CNES / SHOM / METEOFRANCE / IFREMER / CNRS / IRD CNES program status – GODAE meeting, august 2007

  4. Status of altimetry missions/activities • TOPEX/POSEIDON : • Stopped after more than 13 years of ocean observations • Jason1/TOPEX tandem mission : success ! • ENVISAT • excellent synergy with Jason1 (T/P and ERS complementarity further improved) • DORIS • 5 DORIS receivers simultaneously in flight : earth reference system strengthened • MERCATOR • inter Agency structure for the implementation of an oceanographic forecasting center in Europe in the mid term (GMES Marine Core Service) • AltiKa : Implementation phase approved. Launch possible from end-2009. • SALP/SSALTO/AVISO : multi-mission ground segment • Next Step : possible contribution(s) to HY-2A/Water/SENTINEL3/JASON3 (TBD) CNES program status – GODAE meeting, august 2007

  5. AVISO Data user teams CNES program status – GODAE meeting, august 2007

  6. Jason1 • Qualified in orbit • Operational mission underway • Products distributed routinely • CNES operations funded through SALP • Required lifetime : 3 years (achieved in december, 2004) • Extended mission: 5 years (achieved in december, 2006) • Extension agreement for 5 more years of operation signed between CNES & NASA on december, 2006 CNES program status – GODAE meeting, august 2007

  7. Jason2/OSTM • Cooperative Framework between NOAA/NASA/EUMETSAT/CNES • basic mission, continuation of Jason1 (Core Mission) • Technological passengers to enhance DORIS performance (CARMEN2/LPT, T2L2) • 4-party MoU • CNES/EUMETSAT agreement • LPT CNES/JAXA MoU Launch date : june 15, 2008 CNES program status – GODAE meeting, august 2007

  8. SARAL/AltiKa • Program approved on december, 2005 • Altimetric Gap filler between ENVISAT & SENTINEL3 • Research oriented mission : - new, higher frequency, greater performance - potential new applications on ice, land, coast areas • …but with a consolidated architecture : conventional altimeter • Cooperative framework : CNES/ISRO • Initially, AltiKa wa supposed to be embarked on OCEANSAT3 mission (with other ocean-dedicated sensors…) • However, delay on OCEANSAT3 schedule • May/June 2006 : CNES&ISRO proposition to embark AltiKa payload with Argos3, on a new platform, named SSB (Small Satellite Bus), which is presently being developed by ISRO. • July2006/November2006 : CNES&ISRO technical studies to assess the feasibility : ok • Confirmation of CNES&ISRO cooperation on this new baseline obtained on December 2006 : SARAL mission (Satellite with ARgos & ALtika) • CNES/ISRO MOUs signed in february, 2007 • Tentative launch date : end-2009/early-2010 • Data policy : ~ the same as JASON missions (through CNES/ISRO RAs) CNES program status – GODAE meeting, august 2007

  9. 4.5 Ku/C320 4 3.5 Ku 3 2.5 Range noise 1 second (cm) 2 Ka 1.5 1 0.5 0 1 2 3 4 5 6 7 8 9 10 H1/3 (m) AltiKa performance Large improvement wrt current altimetry missions :- altimetric noise 3 times better on ocean- very good coastal and inland (rivers, lakes) performance - main limitation of AltiKa : non-operationality for rain rate > several mm/h (5 to 10% of time depending on the geographic area), however not a constraint when associated to JASON2 Comparison of tracking performance on western Corsica coastline: -AltiKa alone (at left) -AltiKa + DIODE/DORIS (at right) CNES program status – GODAE meeting, august 2007

  10. 91 05 92 06 93 07 94 08 95 09 10 96 97 11 12 98 13 99 00 14 01 15 02 16 03 17 04 18 19 05 Jason-3 Jason-1 66° inclination Jason-2 Envisat Post-EPS-1 AltiKa/SARAL HY-2A ERS/GFO NPOESS High inclination Sentinel 3 CRYOSAT2 On going mission EUM managed mission pending approval Approved mission GMES mission pending approval Pending Jason follow-on IPO managed mission pending approval Status of altimetry programs CNES program status – GODAE meeting, august 2007

  11. DORIS Next Steps • HY-2A : CNES/CNSA discussions underway • Payload : Dual frequency altimeter, nadir 3-frequency radiometer, 5-frequency scanning radiometer, scanning scatterometer, +DORIS/GPS/LRA • Orbit : SSO 6am-6pm, 14 days (after 1-year geodetic mission) • Launch : 2009 • JASON3 : • NOAA/EUMETSAT cooperation with EC, CNES & NASA (TBC) contributions • CNES in-kind contribution : Proteus platform and project team equivalent to JASON/OSTM (i.e. about one third of European part of the program) • Launch : end-2012 • WATER (or SWOT) : CNES/NASA discussions underway • Ku/C nadir altimeter (SRAL) + Ka-band wide-swath SAR-altimeter • Phase 0 in 2007 (CNES/JPL) • Cooperation scheme TBD • Launch : 2013-2016 timeframe • and contributions to ESA/EC missions : Cryosat2, Sentinel3 (TBD) CNES program status – GODAE meeting, august 2007

  12. Future mission with a new parameter measured from Space :SMOS : Soil Moisture and Salinity Mission CNES program status – GODAE meeting, august 2007

  13. SMOS : Soil Moisture and Salinity Mission • ESA Mission [Earth Explorer Opportunity Mission] • Cooperation between ESA / CDTI / CNES • Science Objectives: • - Soil Moisture • - Ocean surface salinity • Phase C/D in progress • Launch 2nd semester 2008 • CNES & IFREMER will develop the CATDS (L3/L4 processing center) CNES program status – GODAE meeting, august 2007

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