Measurements of midwave and longwave infrared polarization from water

Joseph A. Shaw; Michael R. Descour; Derek S. Sabatke; John Phillips Garcia; Eustace L. Dereniak

doi:10.1117/12.366322

25 October 1999 Measurements of midwave and longwave infrared polarization from water

Joseph A. Shaw, Michael R. Descour, Derek S. Sabatke, John Phillips Garcia, Eustace L. Dereniak

Author Affiliations +

Proceedings Volume 3754, Polarization: Measurement, Analysis, and Remote Sensing II; (1999) https://doi.org/10.1117/12.366322
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

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Joseph A. Shaw, Michael R. Descour, Derek S. Sabatke, John Phillips Garcia, and Eustace L. Dereniak "Measurements of midwave and longwave infrared polarization from water", Proc. SPIE 3754, Polarization: Measurement, Analysis, and Remote Sensing II, (25 October 1999); https://doi.org/10.1117/12.366322

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