New approach to spectral features modeling

Hedser van Brug; Paolo S. Scalia

doi:10.1117/12.931497

15 October 2012 New approach to spectral features modeling

Hedser van Brug, Paolo S. Scalia

Proceedings Volume 8510, Earth Observing Systems XVII; 85100G (2012) https://doi.org/10.1117/12.931497
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

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.

Citation Download Citation

Hedser van Brug and Paolo S. Scalia "New approach to spectral features modeling", Proc. SPIE 8510, Earth Observing Systems XVII, 85100G (15 October 2012); https://doi.org/10.1117/12.931497

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