Wayne, IN, which is used to illuminate the ABI earth-port for determination of its visible-near infrared spectral radiance
response functions, was measured in April 2013 by NIST (Carol Johnson and Steve Maxwell) to validate its radiance scale.
B]) can be obtained converting the spectral radiance
Use of spectral radiance
for correcting in-season fertilizer nitrogen deficiencies in winter wheat.
HALO passes a cloud and specMACS observes a vertical column of pixels and records the spectral radiances
reflected by the cloud.
Key words: calibration coefficients; detector-based calibrations; filtered radiometer; mean wavelength; radiometry; spectral radiance
1] with atmospheric emitted spectral radiance
measured at the Antarctica Dome-C site.
i,j] is the digital number output by instrument detector i in band j, G is the instrument detector plus digitization gain, L([lambda]) is the spectral radiance
at the instrument entrance aperture, [A.
n] is the spectral radiance
of a black-body at wavelength [[lambda].
With respect to the pre-launch calibration of the EOS Terra and Landsat 7 ETM+ instruments, a set of transfer radiometers operating in the visible through shortwave infrared wavelength region (from 400 nm to 2500 nm) has been independently developed and calibrated by several metrology laboratories and used to assess standard sources of spectral radiance
The measured fluorescence spectral radiance
is given in terms of measured signals by (Eq.
The guiding principle for the calibration was to perform separate, controlled experiments for each parameter affecting the conversion from light to signal; these parameters are dark signal, linearity, exposure time, and spectral radiance
A good example comes from pyrometry, where the determination of the spectral radiance
of a blackbody source can be used to infer its temperature using the Planck law.