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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12464–12482

Directional Effects Consideration to Improve out-doors Emissivity Retrieval in the 3–13 µm Domain

Keyvan Kanani, Laurent Poutier, Françoise Nerry, and Marc-Philippe Stoll  »View Author Affiliations

Optics Express, Vol. 15, Issue 19, pp. 12464-12482 (2007)

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This work analyses and solves for issues encountered when retrieving surface emissivity in LWIR (750 to 1250 cm-1) and MWIR (2000 to 3500 cm-1) bands under outdoor conditions. The Spectral Smoothness method, which takes advantage of high spectral resolution measurements to solve for temperature emissivity separation, and which has already proven its efficiency in the LWIR domain, was applied in an experimental campaign to assess its ability to operate both in the LWIR and MWIR domains. In the MWIR band, directional behaviour of surface emissivity is shown to be a source of systematic errors in the retrieved emissivity and a new method, called SmaC (SMoothness And Continuity), corrects for this error by providing quantitative estimates on the deviation of the surface from Lambertian behavior.

© 2007 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: March 20, 2007
Revised Manuscript: June 1, 2007
Manuscript Accepted: June 7, 2007
Published: September 14, 2007

Keyvan Kanani, Laurent Poutier, Françoise Nerry, and Marc-Philippe Stoll, "Directional effects consideration to improve out-doors emissivity retrieval in the 3-13 μm domain," Opt. Express 15, 12464-12482 (2007)

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