Temperature Measurement Validity For Dual Spectral-Band Radiometric Techniques

Joseph D. Fehribach; R. Barry Johnson

doi:10.1117/12.7977140

1 December 1989 Temperature Measurement Validity For Dual Spectral-Band Radiometric Techniques

Joseph D. Fehribach, R. Barry Johnson

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Optical Engineering, Vol. 28, Issue 12, 281255 (December 1989). https://doi.org/10.1117/12.7977140

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.

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Joseph D. Fehribach and R. Barry Johnson "Temperature Measurement Validity For Dual Spectral-Band Radiometric Techniques," Optical Engineering 28(12), 281255 (1 December 1989). https://doi.org/10.1117/12.7977140

Published: 1 December 1989

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