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Optical Engineering

Temperature Measurement Validity For Dual Spectral-Band Radiometric Techniques
Author(s): Joseph D. Fehribach; R. Barry Johnson
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Paper Abstract

The measurement of the temperature of objects by remote means is important in science, industry, and other areas. A technique often employed is ratio radiometry, in which the temperature of the object is related to the ratio of the radiometric signals derived from each of two measurement spectral bands. A lingering question as to whether this technique is valid for determining temperature is answered. Although the technique is generally valid, certain spectral-band pairs can produce ambiguous results, namely, the same ratio can be obtained by looking at two objects, each at a particular, yet different temperature. Ambiguities occur only for spectral-band arrangements in which one spectral band is completely contained within the other. Examples are presented to illustrate this finding.

Paper Details

Date Published: 1 December 1989
PDF: 5 pages
Opt. Eng. 28(12) 281255 doi: 10.1117/12.7977140
Published in: Optical Engineering Volume 28, Issue 12
Show Author Affiliations
Joseph D. Fehribach, University of Alabama in Huntsville (United States)
R. Barry Johnson, University of Alabama in Huntsville (United States)

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