Remote temperature retrieval from heating or cooling targets

María-Paz Zorzano; Luis Vázquez

doi:10.1364/OL.31.001420

Optics Letters
Vol. 31,
Issue 10,
pp. 1420-1422
(2006)
•https://doi.org/10.1364/OL.31.001420

Remote temperature retrieval from heating or cooling targets

María-Paz Zorzano and Luis Vázquez

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María-Paz Zorzano and Luis Vázquez, "Remote temperature retrieval from heating or cooling targets," Opt. Lett. 31, 1420-1422 (2006)

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Abstract

We propose a simple pyrometric algorithm to retrieve the temperature from a radiating body during heating or cooling with no prior knowledge of the spectral emissivity. We ratio the measured fluxes at two different temperatures in two narrow bands. The error budget of this method is calculated. We consider its application for the rover-based exploration of the Martian ground, which is subjected to daily and seasonal temperature variations. The method is optimized to increase accuracy in the retrieval of temperature variation, which is the most interesting parameter for ground heat-flux studies.

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Equations (20)

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$T_{1}$	$T_{2}$	$R_{1}$	$R_{2}$	$e (T_{1})$	$e (T_{2})$	$e (Δ T)$
$150 K$	$155 K$	0.8553	0.7334	$2.6 K$	$2.8 K$	$- 0.2 K$
$225 K$	$230 K$	0.9298	0.8694	$3.7 K$	$3.8 K$	$- 0.1 K$
$295 K$	$300 K$	0.9563	0.9209	$6.3 K$	$6.4 K$	$- 0.2 K$
$150 K$	$170 K$	0.565	0.323	$2.1 K$	$2.6 K$	$- 0.05 K$
$225 K$	$245 K$	0.760	0.591	$4.8 K$	$5.5 K$	$- 0.7 K$
$280 K$	$300 K$	0.829	0.707	$2.4 K$	$2.6 K$	$- 0.2 K$

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Optics Letters