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Applied Optics

Applied Optics


  • Vol. 41, Iss. 6 — Feb. 20, 2002
  • pp: 965–973

Homomorphism between cloudy and clear spectral radiance in the 800–900-cm-1 atmospheric window region

Guido Masiello, Marco Matricardi, Rolando Rizzi, and Carmine Serio  »View Author Affiliations

Applied Optics, Vol. 41, Issue 6, pp. 965-973 (2002)

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The sensitivity of a new algorithm for cloud detection over a sea surface has been assessed on the basis of extensive simulations of clear and cloudy radiance spectra, including water and ice and low- and high-altitude clouds. The new algorithm makes use of autocorrelation and cross correlation between an observed spectrum and either a synthetic or a laboratory spectrum and can be used to determine quantitatively the degree of homogeneity of two spectra in the 800–900-cm-1 region (11.11–12.5 µm). The scheme is intended for high-spectral-resolution observations and could form the basis for an operational stand-alone cloud-detection algorithm for next-generation sounding spectrometers. Application of the scheme to real observations is presented and discussed.

© 2002 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.3920) Atmospheric and oceanic optics : Meteorology
(280.0280) Remote sensing and sensors : Remote sensing and sensors

Original Manuscript: January 19, 2001
Revised Manuscript: September 14, 2001
Published: February 20, 2002

Guido Masiello, Marco Matricardi, Rolando Rizzi, and Carmine Serio, "Homomorphism between cloudy and clear spectral radiance in the 800–900-cm-1 atmospheric window region," Appl. Opt. 41, 965-973 (2002)

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