The Soil Moisture Active Passive (SMAP) mission, one of the first-tier missions recommended by the 2007 U.S. National Research Council Committee on Earth Science and Applications from Space, was confirmed in May 2012 by NASA to proceed into Implementation Phase (Phase C) with a planned launch in October 2014. SMAP will produce high-resolution and accurate global maps of soil moisture and its freeze/thaw state using data from a non-imaging synthetic aperture radar and a radiometer, both operating at L-band. Major challenges addressed by the observatory design include: (1) achieving global coverage every 2–3 days with a single observatory; (2) producing both high resolution and high accuracy soil moisture data, including through moderate vegetation; (3) using a mesh reflector antenna for L-band radiometry; (4) minimizing science data loss from terrestrial L-band radio frequency interference; (5) designing fault protection that also minimizes science data loss; (6) adapting planetary heritage avionics to meet SMAP's unique application and data volume needs; (7) ensuring observatory electromagnetic compatibility to avoid degrading science; (8) controlling a large spinning instrument with a small spacecraft; and (9) accommodating launch vehicle selection late in the observatory's development lifecycle.


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    Titel :

    NASA's Soil Moisture Active Passive (SMAP) observatory


    Beteiligte:
    Kellogg, Kent (Autor:in) / Thurman, Sam (Autor:in) / Edelstein, Wendy (Autor:in) / Spencer, Michael (Autor:in) / Chen, Gun-Shing (Autor:in) / Underwood, Mark (Autor:in) / Njoku, Eni (Autor:in) / Goodman, Shawn (Autor:in) / Jai, Benhan (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2013-03-01


    Format / Umfang :

    6678872 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    NASA's Soil Moisture Active Passive (SMAP) Observatory

    Kellogg, Kent / Thurman, Sam / Edelstein, Wendy et al. | NTRS | 2013


    NASA's Soil Moisture Active and Passive (SMAP) Mission

    Kellogg, Kent / Njoku, Eni / Thurman, Sam et al. | NTRS | 2010


    NASA's SMAP Observatory

    Kellogg, K. / Thurman, S. / Edelstein, W. et al. | NTRS | 2013