Absolute radiometric calibration of the DAIS-7915 thermal channels using sub-pixel targets

Details Absolute radiometric calibration of the DAIS-7915 thermal channels using sub-pixel targets Absolute radiometric calibration of the DAIS-7915 thermal channels using sub-pixel targets

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3753..463z&link_type=abstract

Proc. SPIE Vol. 3753, p. 463-474, Imaging Spectrometry V, Michael R. Descour; Sylvia S. Shen; Eds.

Physics

Scientific paper

Utilization of sub-pixel targets for radiometric calibration of airborne and space-borne imaging sensors involves the uncertainty of their contribution to the pixel-integrated radiance. This contribution depends not only on the target area but also on an unknown location of the sub-pixel target within a sensor pixel. A technique is proposed to retrieve both the target radiance and its sub-pixel location from the target image, taking into account the effects of the sensor point spread function. The technique was used for in-flight calibration of the thermal channels of the airborne imaging spectrometer DAIS-7915.

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