20 August 2001 Recipes for writing algorithms for atmospheric corrections and temperature/emissivity separations in the thermal regime for a multispectral sensor
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Abstract
This paper discusses the algorithms created for the Multi- spectral Thermal Imager (MTI) to retrieve temperatures and emissivities. Recipes to create the physics based water temperature retrieval, emissivity of water surfaces are described. A simple radiative transfer model for multi- spectral sensors is developed. A method to create look-up- tables and the criterion of finding the optimum water temperature are covered. Practical aspects such as conversion from band-averaged radiances to brightness temperatures and effects of variations in the spectral response on the atmospheric transmission are discussed. A recipe for a temperature/emissivity separation algorithm when water surfaces are present is given. Results of retrievals of skin water temperatures are compared with in- situ measurements of the bulk water temperature at two locations are shown.
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Christoph C. Borel, Christoph C. Borel, William B. Clodius, William B. Clodius, } "Recipes for writing algorithms for atmospheric corrections and temperature/emissivity separations in the thermal regime for a multispectral sensor", Proc. SPIE 4381, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VII, (20 August 2001); doi: 10.1117/12.437011; https://doi.org/10.1117/12.437011
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