An approach is described for providing periodic inflight absolute radiometric calibrations of the LANDSAT-4 sensors by reference to selected, instrumented ground areas. Results of some early ground measurements and computer simulations are presented. Selection of a suitable ground reference site, accurate measurement of the spectral reflectance of the selected area, determination of atmospheric characteristics during the morning of the sensor overpass, reduction of the measured data and their use in an appropriate atmospheric radiative transfer program, and comparison of the radiance level data with the digital counts of for the images of the selected areas are discussed. Preliminary measurements of gypsum are being made as an aid in defining the characteristics of field equipment to be constructed and calibrated for use over the White Sands Missile Range.


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    Titel :

    In-progress absolute radiometric inflight calibration of the LANDSAT-4 sensors


    Beteiligte:
    Castle, K. (Autor:in) / Dinguirard, M. (Autor:in) / Ezra, C. E. (Autor:in) / Holm, R. G. (Autor:in) / Jackson, R. J. (Autor:in) / Kastner, C. J. (Autor:in) / Palmer, J. M. (Autor:in) / Savage, R. (Autor:in) / Slater, P. N. (Autor:in)


    Erscheinungsdatum :

    01.01.1983


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




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