Comparison of some algorithms commonly used in IR pyrometry: a computer simulation

Gianni Barani; Alessandro Tofani

doi:10.1117/12.46458

1 March 1991 Comparison of some algorithms commonly used in IR pyrometry: a computer simulation

Gianni Barani, Alessandro Tofani

Proceedings Volume 1467, Thermosense XIII; (1991) https://doi.org/10.1117/12.46458
Event: Orlando '91, 1991, Orlando, FL, United States

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.

Citation Download Citation

Gianni Barani and Alessandro Tofani "Comparison of some algorithms commonly used in IR pyrometry: a computer simulation", Proc. SPIE 1467, Thermosense XIII, (1 March 1991); https://doi.org/10.1117/12.46458

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