Apogee SI-4H1 Manual do Proprietário - Página 17
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where T
[K] is temperature measured by the infrared radiometer (brightness temperature), T
Sensor
temperature of the target surface, T
σ is the Stefan-Boltzmann constant (5.67 x 10
the entire blackbody spectrum.
Rearrangement of Eq. (2) to solve for T
temperature (i.e., measured brightness temperature corrected for emissivity effects):
T
Sensor
T
4
T
arg
et
[K] is brightness temperature of the background (usually the sky), and
Background
-8
W m
yields the equation used to calculate the actual target surface
Target
4
4
1
T
Background
.
-2
-4
K
). The power of 4 on the temperatures in Eq. (2) is valid for
(3)
[K] is actual
Target