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Proceedings Paper

Low-cost remote sensing instruments for atmospheric trace species and improvements in radiometric calibration
Author(s): Donald F. Heath
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Paper Abstract

Comparisons of a new class of ultra stable ion-assisted- deposition (IAD) narrow band interference filters fabricated from thin films of refractory metal oxides and SiO2 have produced 'hard' filters which are radiometrically stable under conditions of extreme environmental stress such as high temperature, humidity, and space. The new IAD interference filter technology can be used to derive detector-based radiometric scales with significantly smaller uncertainties than a source-based radiometric calibration scale. For the ultraviolet, 250 to 400 nm, a calibration transfer spectroradiometer consisting of a small tandem Ebert-Fastie double monochromator and a multifilter spectroradiometer consisting of a series of narrow band IAD filters combined with a NIST quantum efficiency silicon photodiode for the ultraviolet should be capable of defining a detector-based radiometric calibration scale with uncertainties less than 1.0%. The double monochromator and the filter calibration transfer standard spectroradiometer have been used to investigate the radiometric uncertainty and repeatability of three radiance sources; a FEL lamp-diffuser, a xenon arc- diffuser, and the aperture of an internally illuminated sphere.

Paper Details

Date Published: 28 December 1999
PDF: 7 pages
Proc. SPIE 3870, Sensors, Systems, and Next-Generation Satellites III, (28 December 1999); doi: 10.1117/12.373209
Show Author Affiliations
Donald F. Heath, Research Support Instruments Inc. (United States)

Published in SPIE Proceedings Vol. 3870:
Sensors, Systems, and Next-Generation Satellites III
Hiroyuki Fujisada; Joan B. Lurie, Editor(s)

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