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15 October 2012 New approach to spectral features modeling
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The origin of spectral features, speckle effects, is explained, followed by a discussion on many aspects of spectral features generation. The next part gives an overview of means to limit the amplitude of the spectral features. This paper gives a discussion of all means to reduce the spectral features amplitude (SFA), i.e. inner pixel averaging, coherence effects, and angular averaging, and to a lesser extend coherence effects and polarization. A new approach to model spectral features is presented, that is based on the averaging mechanisms, in a similar way as is used for speckle patterns. Formulae for all averaging methods are given and the use is discussed. The paper starts off with a short description on Spectral Features as observed in earth observation spectrometers, followed by speckle effects and averaging mechanisms. Next the origin of the averaging mechanisms in a spectrometer are given and a method to calculate them.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hedser van Brug and Paolo S. Scalia "New approach to spectral features modeling", Proc. SPIE 8510, Earth Observing Systems XVII, 85100G (15 October 2012);

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