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Proceedings Paper

An absolute detector-based spectral radiance source
Author(s): Steven W. Brown; Robert D. Saunders; Zhigang Li; Abra Fein; Robert A. Barnes
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Paper Abstract

We describe an absolute, spectrally tunable, detector-based broad-band radiometric calibration source whose uncertainties in spectral radiance may approach those of reference detectors, on the order of 0.1 % (k=1). This uncertainty in the spectral radiance of the source is a factor of two lower than the current uncertainty in radiance sources disseminated by the National Institute of Standards and Technology, USA (NIST). These low uncertainties in radiance calibration sources are required for satellite sensors supporting climate change missions. For example, the uncertainty requirements for the Climate Absolute Radiance and Refractivity Observatory (CLARREO) sensor are approximately 0.2 % (k=1) in the silicon range. The conceptual framework of the source, characterization and radiance validation data and trending of the source radiance over time are described.

Paper Details

Date Published: 24 September 2010
PDF: 9 pages
Proc. SPIE 7807, Earth Observing Systems XV, 78070A (24 September 2010); doi: 10.1117/12.860544
Show Author Affiliations
Steven W. Brown, National Institute of Standards and Technology (United States)
Robert D. Saunders, DSK Science, Inc. (United States)
Zhigang Li, Space Dynamics Laboratory (United States)
Abra Fein, Dickinson College (United States)
Robert A. Barnes, Science Applications International Corp. (United States)


Published in SPIE Proceedings Vol. 7807:
Earth Observing Systems XV
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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