Hyperspectral infrared measurements of Earth’s atmosphere from space have proven their value for weather forecasting, climate science and atmospheric composition. The CubeSat Infrared Atmospheric Sounder (CIRAS) instrument will demonstrate a fully functional infrared temperature, water vapor and carbon monoxide sounder in a CubeSat sized volume for at least an order of magnitude lower cost than legacy systems. Design for a CubeSat significantly reduces cost of access to space and enables flight in a constellation to reduce revisit time and enable new measurements including 3D winds. A technology demonstration of CIRAS is currently under development at JPL. The effort has completed integration and ambient testing of a high fidelity brassboard, complete with the flight configured optics assembly developed by Ball Aerospace with a JPL Immersion Grating and Black Silicon Entrance Slit. The brassboard includes a flight-configured High Operating Temperature Barrier Infrared Detector (HOT-BIRD) mounted in an Integrated Dewar Cryocooler Assembly (IDCA), enabling testing in the ambient environment. Ambient testing included radiometric testing of the system to characterize the instrument operability and NEdT. Spatial testing was performed to characterize the system line spread function (LSF) in two axes and report FWHM of the LSF. Spectral testing involved an air path test to characterize the spectral/spatial transformation matrix, and an etalon was used to measure the Spectral Response Functions (SRFs). Results of the testing show the CIRAS performs exceptionally well and meets the key performance required of the system. The end result of testing is the CIRAS instrument now meets TRL 4 with confidence in a brassboard configuration ready for thermal vacuum (TVac) testing necessary to achieve TRL 5 for the system.


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    Titel :

    Ambient performance testing of the CubeSat Infrared Atmospheric Sounder (CIRAS)


    Beteiligte:
    Pagano, Thomas S. (Autor:in) / Schwochert, Mark A. (Autor:in) / Rafol, Sir B. (Autor:in) / Maruyama, Yuki (Autor:in) / Monacelli, Brian (Autor:in) / Johnson, Dean L. (Autor:in) / Ting, David Z. (Autor:in) / Wilson, Daniel W. (Autor:in) / Gibson, Megan S. (Autor:in) / Kampe, Thomas U. (Autor:in)

    Kongress:

    CubeSats and SmallSats for Remote Sensing V ; 2021 ; San Diego,California,United States


    Erschienen in:

    Proc. SPIE ; 11832


    Erscheinungsdatum :

    02.08.2021





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Ambient performance testing of the CubeSat Infrared Atmospheric Sounder (CIRAS)

    Pagano, Thomas S. / Schwochert, Mark A. / Rafol, Sir B. et al. | British Library Conference Proceedings | 2021


    The CubeSat Infrared Atmospheric Sounder (CIRAS)

    Pagano, Thomas S. / Rider, David / Lane, Marc et al. | NTRS | 2016


    Status of the CubeSat Infrared Atmospheric Sounder (CIRAS)

    Weir, Patricia / Pagano, Thomas S. | NTRS | 2019