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A -- JPL INTEGRATED MULTISPECTRAL ATMOSPHERIC SOUNDER INSTRUMENT DESIGN SOL L04-1-3790-962 DUE 020198 POC Edward Kieckhefer (818) 354-1293 E-MAIL: IMAS Instrument Preliminary Design RFP, edward.h.kieckhefer@jpl.nasa.gov. The Jet Propulsion Laboratory/California Institute of Technology (JPL/Caltech), operating under a prime contract with the National Aeronautics and Space Administration (NASA), will be soliciting proposals for the Integrated Multispectral Atmospheric Sounder (IMAS) preliminary design and follow-on option for the Design, Manufacture, Test, and Support to provide two (2) IMAS instruments for two (2) Earth Orbiting Space Missions. It is anticipated that the formal Request for Proposal (RFP) will be issued in February 1998. IMAS is the successor to several sounding instruments that will fly on the NASA EOS-PM1 Mission. The IMAS design will employ new advanced technologies in infrared and microwave detectors, cryogenic coolers, structural materials, and integrated microcircuitry to combine the complementary sounding functions of the Atmospheric Infrared Sounder (AIRS), the Advanced Microwave Sounder (AMSU) and the Microwave Humidity Sounder (MHS) into a single integrated sounding system. The mass and power requirements of the integrated system are expected to be much smaller than those for the total AIRS/AMSU/MHS instrument package. IMAS will meet the basic NOAA, NASA, and DoD needs for atmospheric temperature and moisture profile data matching the accuracy of radiosondes, commonly interpreted as an RMS accuracy of 1 degree Celsius in 1-km thick layers within the troposphere. Like AIRS/AMSU/MHS radiance data, the IMAS will continue to support the operational global weather forecasting function of NOAA and the Global Change Research Program of NASA's Office of Earth Science. IMAS covers the 3.74-15.4 micron infrared region (IR) with a spectral resolving power of approximately 1200 and the microwave region (MW) between 50 GHz and 183GHz. IMAS employs crosstrack scanning to provide contiguous twice daily coverage of essentially the entire globe from a 833 km altitude sun-synchronous orbit. Data from IMAS will be telemetered to the ground in compressed form via a direct S-band downlink. The following capabilities are required to be considered for award: (a) space instrument experience; (b) millimeter Wave (mmW) experience; (c) infrared instrument experience; (d) space systems engineering; (e) as well as appropriate development, manufacture and testing facilities, including optical/IR vacuum test facilities for cryogenic instruments; and (f) recent experience (approximately eight (8) years) in delivering space equipment which successfully met operation (in flight) requirements. NASA and JPL/Caltech will not make any commitment at this time to fund follow-on phases. The Definition Phase is intended to begin approximately in May 1998 and is expected to be complete in August 1999. The solicitation RFP and instructions for this solicitation will be available in late February 1998. Send your request via E-mail to: edward.h.kieckhefer@jpl.nasa.gov or via FAX to the attention of E. H. Kieckhefer, (818) 354-3494. An Industry Briefing will be held prior to release of the RFP. (0349)

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