Recipes for writing algorithms for atmospheric corrections and temperature/emissivity separations in the thermal regime for a multispectral sensor

Christoph C. Borel; William B. Clodius

doi:10.1117/12.437011

20 August 2001 Recipes for writing algorithms for atmospheric corrections and temperature/emissivity separations in the thermal regime for a multispectral sensor

Christoph C. Borel, William B. Clodius

Author Affiliations +

Proceedings Volume 4381, Algorithms for Multispectral, Hyperspectral, and Ultraspectral Imagery VII; (2001) https://doi.org/10.1117/12.437011
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

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.

Citation Download Citation

Christoph C. Borel and 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); https://doi.org/10.1117/12.437011

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