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NPOESS Preparatory Project NPP Space Segment

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NPOESS Preparatory Project NPP Space Segment

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    1. NPOESS Preparatory Project (NPP) Space Segment Bill Anselm NPP Satellite Manager NASA Goddard Space Flight Center

    3. NPP SPACE SEGMENT “Pathfinder” for NPOESS “Bridge” mission for earth science data records Four Sensors: ATMS (Advanced Technology Microwave Sounder) by NGES CrIS (Cross-Track Infrared Sounder) by ITT OMPS (Ozone Mapping Profiler Suite) by BATC VIIRS (Visible/Infrared Imager Suite) by SBRS Science Data Segment by NASA PDR 9/06 Spacecraft, payload I&T, launch ops, and 90 days ops by NASA/BATC Managed by NOAA/USAF/NASA: Integrated Program Office GSFC, Code 429 SSPR NGST

    4. NPP MISSION OVERVIEW 5-year mission; 7-year goal 2,270 kg to 805 km 10:30 equator crossing (13:30 proposed) 2,181 W orbit average; 2,365 W peak Pointing: Control to +/-135.7 urad (28 as) Knowledge to +/-35 urad (7.2 as) Jitter < 14.5 urad/dt (3as/dt) Communication: Dedicated ground station at Svalbard S-Band Commands and Housekeeping X-Band Science Continuous X-Band Science downlink worldwide Compatible with TDRSS and NASA sites (command and housekeeping) MIL-STD-1553 and IEEE-1394 data busses Launch from VAFB; Delta II

    5. NPP MISSION OVERVIEW Survived Nunn-McCurdy EVERYONE smarter, chastened, committed NPP mostly intact, lost OMPS Limb Sensor IPO restructured NGST restructured NPOESS payload redefined (see next briefing)

    6. PROGRESS! Spacecraft built and qualified Successful interface tests with C3S, White Sands, Svalbard ATMS EDU integrated and tested with the spacecraft FU1 accepted and delivered (in-place); ready for Satellite I&T CrIS EDU No.3 integrated and tested with the spacecraft FM in final environmental qual; expected early ‘07 OMPS Brassboard MEB integrated and tested with the spacecraft FM units ready for suite integration (Nadir only; Limb de-scoped) VIIRS EDU for satellite I&T and 1394 testing expected late ‘06 FM in work

    7. SATELLITE ZENITH DECK

    8. SENSOR EDU I&T Risk Reduction

    9. SATELLITE NADIR DECK

    10. COMING SOON Hot/Cold testing EDU (IEEE-1394 bench top) I&T ATMS and CrIS FM I&T VIIRS EDU Hot/Cold testing Observatory (IEEE-1394 vacuum) SDS CDR Launch (9/09)

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