Santa Barbara Research Center is currently under contract from NASA Goddard Space Flight Center to design and build the MODerate resolution Imaging Spectroradiometer (MODIS) for launch in 1998 on the EOS-AM spacecraft. MODIS is a remote sensing instrument incorporating state-of-the-art multi-spectral imaging and calibration technology. Two cooled infrared (IR) focal planes and two room-temperature visible and near infrared focal planes are used to gather imaging data in 36 discrete spectral bands between 0.41 and 14.4 μm. A passive radiative cooler is employed to achieve a nominal IR focal plane operating temperature of 85K.To meet mission objectives, band-to-band registration of ±0.2 pixel and radiometric calibration accuracy better than 1% within the thermal region and 5% within the reflectance region must be maintained over a five-year instrument design life. This places significant demands on the thermal design which must provide a stable operating environment with minimal temperature gradients and thermoelastic distortion. Advanced engineering materials including beryllium and graphite/epoxy are used extensively in the design along with various passive thermal control techniques to optimize performance.This paper presents an overview of MODIS thermal control design features along with a summary of analytical performance predictions for the overall system and for thermally critical subsystems such as the passive cryogenic radiative cooler. Thermal engineering challenges are discussed along with corresponding design solutions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Thermal Control Design for the MODIS Instrument


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference On Environmental Systems ; 1994



    Publication date :

    1994-06-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Status of Terra MODIS and Aqua MODIS

    Barnes, W. L. / Xiong, X. / Salomonson, V. V. et al. | British Library Conference Proceedings | 2003


    Status of terra MODIS and aqua modis

    Barnes, W.L. / Xiong, X. / Salomonson, V.V. | Elsevier | 2003


    Status of terra MODIS and aqua modis

    Barnes, W.L. | Online Contents | 2003


    IASI Instrument Thermal Control

    Alis, Claude / Bonnetto, Gilles | SAE Technical Papers | 2002


    GOCE Instrument Thermal Control

    Pieper, Bernd / Valentini, David / Battaglia, Domenico et al. | SAE Technical Papers | 2006