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Proceedings Paper

Comparison of some algorithms commonly used in IR pyrometry: a computer simulation
Author(s): Gianni Barani; Alessandro Tofani
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Paper Abstract

The reliability of some algorithms commonly used in inferring surface temperature from infrared radiation has been investigated. Single-band, two-color and multiwavelength pyrometry methods have been considered. The signal received by the pyrometer was computer simulated by taking into account the spectral emissivity of the target, the effects of atmospheric absorption and self-emission, the selective transmittance of the optics, the contributions due to surrounding bodies and the spectral response of detector. The reliability of the algorithms was obtained by computing the difference between the true target temperature and the calculated one. Results indicate that a good knowledge of target emissivity and atmospheric transmittance is required to achieve a reasonable accuracy. The simulation allows also to predict the increase of temperature error when the atmospheric radiance is not negligible or when a low-emissivity target reflects the radiation from surrounding bodies into the field of view.

Paper Details

Date Published: 1 March 1991
PDF: 11 pages
Proc. SPIE 1467, Thermosense XIII, (1 March 1991); doi: 10.1117/12.46458
Show Author Affiliations
Gianni Barani, Officine Galileo SpA (Italy)
Alessandro Tofani, Officine Galileo SpA (Italy)

Published in SPIE Proceedings Vol. 1467:
Thermosense XIII
George S. Baird, Editor(s)

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