The multi-angle imaging spectro-radiometer (MISR), to be launched in 1998, is one of five instruments on NASA's first Earth Observing System (EOS) platform. The 3% (1/spl sigma/) absolute radiometric calibration requirement is considered challenging, particularly since it must be maintained through the five-year mission life. The instrument requirements have led to the development of an on-board calibrator (OBC) consisting of diffuse panels and photodiode-based radiometric standards. Although used extensively in national standard laboratories, MISR will be the first in-orbit instrument to utilize Spectralon calibration targets, and the first instrument to establish a radiometric scale in orbit using detector-based standards. The team has adopted the nomenclature high quantum efficiency (HQE) technology to refer to the implementation of 100% internal quantum efficient photodiodes in a trapped configuration. Filtered HQE radiometers are being utilized in the preflight calibration phase to calibrate the flat-field source, they will also be used to characterize solar-reflected light from the diffuse calibration targets during the mission. In addition, radiation-resistant photodiodes will be utilized as part of the OBC.<>


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    Title :

    State of the art radiometer standards for NASA's Earth Observing System


    Contributors:
    Jorquera, C.R. (author) / Ford, V.G. (author) / Duval, V.G. (author) / Bruegge, C.J. (author) / Korde, R. (author)


    Publication date :

    1995-01-01


    Size :

    858985 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    State of the Art Radiometer Standards for NASA's Earth Observing System

    Jorquera, C. R. / Ford, V. G. / Duval, V. G. et al. | British Library Conference Proceedings | 1995




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