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Proceedings Paper

Measurements of midwave and longwave infrared polarization from water
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Paper Abstract

In the largely unpolarized natural IR environment, water stands out as a notably polarized source. Water surfaces appear partially polarized in the IR through both reflection and emission. This polarization can be significant in environmental and military remote sensing applications where the water is either the intended source or possibly a false target. In this paper we show and interpret measurements in midwave and longwave IR bands. The midwave images show up to 7 percent s polarization in regions where warm objects reflect from the water. The longwave data also show s polarization in regions of sunglint, but elsewhere exhibit p polarization. Where the background is clear sky, the longwave signal is p polarized by up to 5 percent at large incidence angles.

Paper Details

Date Published: 25 October 1999
PDF: 8 pages
Proc. SPIE 3754, Polarization: Measurement, Analysis, and Remote Sensing II, (25 October 1999); doi: 10.1117/12.366322
Show Author Affiliations
Joseph A. Shaw, National Oceanic and Atmospheric Administration (United States)
Michael R. Descour, Optical Sciences Ctr./Univ. of Arizona (United States)
Derek S. Sabatke, Optical Sciences Ctr./Univ. of Arizona (United States)
John Phillips Garcia, Optical Sciences Ctr./Univ. of Arizona (United States)
Eustace L. Dereniak, Optical Sciences Ctr./Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 3754:
Polarization: Measurement, Analysis, and Remote Sensing II
Dennis H. Goldstein; David B. Chenault, Editor(s)

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