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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 31 — Nov. 1, 2008
  • pp: 5799–5810

Thermal infrared radiance simulation with aggregation modeling (TITAN): an infrared radiative transfer model for heterogeneous three-dimensional surface—application over urban areas

Guillaume Fontanilles, Xavier Briottet, Sophie Fabre, and Thierry Trémas  »View Author Affiliations

Applied Optics, Vol. 47, Issue 31, pp. 5799-5810 (2008)

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The thermal infrared radiance simulation with aggregation modeling (TITAN) model, presented here, is an innovative transfer radiative code in the infrared domain ( 3 14 μm ). It takes into account the three-dimensional (3D) structure of the landscape and simulates all the radiative components introduced by this 3D structure, which are due to the reflection and emission of walls and sloping roofs. Examples are given to illustrate the new opportunities offered by TITAN over urban areas. First, a phenomenological study is conducted at four wavelengths analyzing the relative effect of all the radiative contributors to the total signal. The same analysis is performed at bottom of atmosphere, which reveals an error occurring when a flat assumption is made (between 1% and 5%). In a second example, the directional effects at sensor level are simulated and show that the radiative temperature can vary by up to 10 K .

© 2008 Optical Society of America

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: June 13, 2008
Revised Manuscript: September 11, 2008
Manuscript Accepted: September 18, 2008
Published: October 24, 2008

Guillaume Fontanilles, Xavier Briottet, Sophie Fabre, and Thierry Trémas, "Thermal infrared radiance simulation with aggregation modeling (TITAN): an infrared radiative transfer model for heterogeneous three-dimensional surface--application over urban areas," Appl. Opt. 47, 5799-5810 (2008)

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