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Proceedings Paper

Technique for improving the calibration of large-area sphere sources
Author(s): James Walker; Christopher L. Cromer; James T. McLean
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Paper Abstract

A new technique for improving the accuracy of radiance calibrations for large-area integrating-sphere sources has been investigated. Such sources are used to calibrate numerous aircraft and spacecraft remote sensing instruments. Recent measurements performed at NIST and NASA Goddard Space Flight Center have demonstrated that the uncertainty of sphere-source radiance measurements can be improved from the present 5 to 10 percent level to a 1 to 2 percent level. Silicon detectors with bandpass filters mounted in front of them and calibrated for absolute spectral responsivity can be used to confirm and to monitor the absolute radiance of a sphere source.

Paper Details

Date Published: 1 August 1991
PDF: 7 pages
Proc. SPIE 1493, Calibration of Passive Remote Observing Optical and Microwave Instrumentation, (1 August 1991); doi: 10.1117/12.46707
Show Author Affiliations
James Walker, National Institute of Standards and Technology (United States)
Christopher L. Cromer, National Institute of Standards and Technology (United States)
James T. McLean, NASA/Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 1493:
Calibration of Passive Remote Observing Optical and Microwave Instrumentation
Bruce W. Guenther, Editor(s)

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