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11 November 1996 Effect of water vapor absorption on integrating sphere output radiance and consequences for instrument calibration
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Abstract
Multiple photon scatterings inside an integrating sphere can result in significant path lengths compared with line-of- sight sources. In strong water vapor absorption channels, such as those on MODIS and the MODIS airborne simulator, these internal path lengths can result in a significant reduction in sphere output radiance. Path length probability distributions for photons exiting a sphere are determined using Monte Carlo calculations. Approximate analytic expressions are also derived. Results are used to determine the effect of water vapor absorption on integrating sphere sensor calibrations in several pertinent channels.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Steven E. Platnick, Peter Abel, and Michael D. King "Effect of water vapor absorption on integrating sphere output radiance and consequences for instrument calibration", Proc. SPIE 2820, Earth Observing System, (11 November 1996); https://doi.org/10.1117/12.258102
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