This is a test of Andrew Klein's New Document Formt
This is a test of Andrew Klein's New Document Formt
This is a test of Andrew Klein's New Document Formt
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2. Conversion <strong>of</strong> Radiance to Temperature<br />
ETM+ Band 6 imagery can also be converted from spectral radiance (as described above) to a more<br />
physically useful variable. <strong>Th<strong>is</strong></strong> <strong>is</strong> the effective at-satellite temperature <strong>of</strong> the viewed Earthatmosphere<br />
system under an assumption <strong>of</strong> unity em<strong>is</strong>sivity and using pre-launch calibration<br />
constants l<strong>is</strong>ted in Table 2. The conversion formula <strong>is</strong>:<br />
K 2<br />
T =<br />
⎛ K2<br />
⎞<br />
ln⎜<br />
⎟<br />
⎜<br />
+ 1<br />
⎟<br />
⎝ Lλ<br />
⎠<br />
Where:<br />
T = Effective at-satellite temperature in Kelvin<br />
K2 = Calibration constant 2 from Table 2<br />
K1 = Calibration constant 1 from Table 2<br />
L λ = Spectral radiance in watts/(meter squared * ster * μm)<br />
Table 2. ETM+ Thermal Constants and Constant Value Units<br />
K1 666.09 W m -2 ster -1 μm -1<br />
K2 1282.71 °K<br />
- 4 -<br />
(3)
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