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Proceedings Paper

Narrow-Field Radiometry In A Quasi-Isotropic Atmosphere
Author(s): Alan Holmes; James M. Palmer; Martin G. Tomasko
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Paper Abstract

If a radiometer having a narrow field of view is used to measure the radiance of a source such as a quasi-isotropic atmosphere, a knowledge of the out-of-field responsivity is critical. For example, if a radiometer with a field of view of 5° (full-angle) has a relative responsivity of 10-4 for the out-of-field radiation, the contribution of the out-of-field radiation (assuming an isotropic source subtending 27 steradians) is 102% of the total signal. Either the stray light suppression of the radiometer must be extremely high or methods of determining the out-of-field response must be developed. A description of one method of determining the effect of out-of-field response and its application to a planetary atmospheric radiometer is presented.

Paper Details

Date Published: 15 November 1979
PDF: 6 pages
Proc. SPIE 0196, Measurements of Optical Radiations, (15 November 1979); doi: 10.1117/12.957953
Show Author Affiliations
Alan Holmes, University of Arizona (United States)
James M. Palmer, University of Arizona (United States)
Martin G. Tomasko, University of Arizona (United States)

Published in SPIE Proceedings Vol. 0196:
Measurements of Optical Radiations
Harold P. Field; Edward F. Zalewski; Frederic M. Zweibaum, Editor(s)

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