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Proceedings Paper

Integrating Sphere Calibration Sources For Remote Sensing Imaging Radiometers
Author(s): Kevin F. Carr
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Paper Abstract

Two specially constructed integrating sphere calibration sources are described. The sources are being used for prelaunch test and calibration of two different imaging radiometers used as satellite-borne earth remote sensors. The calibration sources are primarily intended to serve as transfer standards of spectral radiance. Design criteria for each integrating sphere are presented. Included is a synopsis of the end-users' specifications regarding spectral radiance, incremental levels of attenuation, source aperture and sterance uniformity. Radiometric theory used to predict the resultant integrating sphere spectral radiance for a specific input flux is summarized. Characteristic design features for both sources are highlighted including a description of the DC power supply systems driving source operation. Calibration methods and instrumentation are described. Resultant data are presented for both sources including a comparison of predicted and measured spectral radiances, luminance uniformity mappings, and stability tests. Methods of data reduction and uncertainty analysis are addressed when applicable.

Paper Details

Date Published: 26 September 1989
PDF: 15 pages
Proc. SPIE 1109, Optical Radiation Measurements II, (26 September 1989);
Show Author Affiliations
Kevin F. Carr, Labsphere, Inc. (United States)

Published in SPIE Proceedings Vol. 1109:
Optical Radiation Measurements II
James M. Palmer, Editor(s)

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