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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 46, Iss. 32 — Nov. 10, 2007
  • pp: 7892–7899

Long-term calibration monitoring of Spectralon diffusers BRDF in the air-ultraviolet

Georgi T. Georgiev and James J. Butler  »View Author Affiliations

Applied Optics, Vol. 46, Issue 32, pp. 7892-7899 (2007)

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Long-term calibration monitoring of the bidirectional reflectance distribution function (BRDF) of Spectralon diffusers in the air-ultraviolet is presented. Four Spectralon diffusers were monitored in this study. Three of the diffusers, designated as H1, H2, and H3, were used in the prelaunch radiance calibration of the Solar Backscatter Ultraviolet∕2 (SBUV∕2) satellite instruments on National Oceanic and Atmospheric Administration (NOAA) 14 and 16. A fourth diffuser, designated as the 400 diffuser, was used in the prelaunch calibration of the Ozone Mapping and Profiler Suite (OMPS) instrument scheduled for initial flight in 2009 on the National Polar Orbiting Environmental Satellite System Preparatory Project. The BRDF data of this study were obtained between 1994 and 2005 using the scatterometer located in the National Aeronautics and Space Administration Goddard Space Flight Center Diffuser Calibration Laboratory. The diffusers were measured at 13 wavelengths between 230 and 425   nm at the incident and scatter angles used in the prelaunch calibrations of SBUV∕2 and OMPS. Spectral features in the BRDF of Spectralon are also discussed. The comparison shows how the air-ultraviolet BRDF of these Spectralon samples changed over time under clean room deployment conditions.

© 2007 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5700) Instrumentation, measurement, and metrology : Reflection
(290.1483) Scattering : BSDF, BRDF, and BTDF

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 23, 2007
Manuscript Accepted: September 17, 2007
Published: November 8, 2007

Georgi T. Georgiev and James J. Butler, "Long-term calibration monitoring of Spectralon diffusers BRDF in the air-ultraviolet," Appl. Opt. 46, 7892-7899 (2007)

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