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Proceedings Paper

ORCA's depolarizer
Author(s): Eugene Waluschka; Mark Wilson; Manuel Quijada; Brendan McAndrew; Leibo Ding
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Paper Abstract

The Ocean Radiometer for Carbon Assessment (ORCA), currently being developed at Goddard, is a hyperspectral instrument with a spectral range extending from 350nm to 880nm in the UV and visible wavelength. Its radiometric measurement accuracy will depend, in part, on the extent to which it is insensitive to linearly polarized light. A wedge type depolarizer is used to reduce ORCA's polarization sensitivity over its entire spectral range. The choice for this approach is driven by the large spectral range and to a certain extent is also influenced by the currently orbiting SeaWifs instrument's use of a wedge depolarizer and its low polarization sensitivity. The wedge depolarizer's design, its modeled and measured depolarization characteristics are presented.

Paper Details

Date Published: 13 September 2011
PDF: 11 pages
Proc. SPIE 8153, Earth Observing Systems XVI, 81530U (13 September 2011); doi: 10.1117/12.895482
Show Author Affiliations
Eugene Waluschka, NASA Goddard Space Flight Ctr. (United States)
Mark Wilson, NASA Goddard Space Flight Ctr. (United States)
Manuel Quijada, NASA Goddard Space Flight Ctr. (United States)
Brendan McAndrew, NASA Goddard Space Flight Ctr. (United States)
Leibo Ding, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 8153:
Earth Observing Systems XVI
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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