Open AccessA new approach for spectroradiometric calibration consistency on the ground and in space
Author(s) -
Donald F. Heath,
Georgi T. Georgiev
Publication year - 2012
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.977252
Subject(s) - radiance , remote sensing , spectroradiometer , irradiance , radiometry , radiometric calibration , calibration , nist , optics , albedo (alchemy) , integrating sphere , stray light , radiometer , environmental science , opacity , physics , geology , computer science , reflectivity , art , quantum mechanics , natural language processing , performance art , art history
A Space-based Calibration Transfer Spectroradiometer (SCATS) is combined with a ground calibration spectral albedo radiometric standard which consists of an opaque quartz glass Mie scattering diffuser (MSD) which has very good Lambertian scattering properties in both reflectance and transmittance modes. This system provides the capability for determining long term changes in the spectral albedo calibrations which operate in the solar reflective wavelength region. The spectral albedo calibration would be traceable to the SIRCUS and STARR NIST calibration facilities. The on-orbit radiometric standard is the Sun. The NIST traceable ground spectral albedo calibration is invariant between the ground and on-orbit over the instrument lifetime due to the use of a field of view defining mechanical baffle to differentiate between radiance and irradiance.
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