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Proceedings Paper

Polarization diversity active imaging
Author(s): Philippe Clemenceau; Sebastien Breugnot; Laurent Collot
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Paper Abstract

We present the concept of a Polarization Diversity Active Imager operating at (lambda) equals 810 nm. Each pixel of the image is encoded by the polarization degree Pd (0% < Pd < 100%) given by its Mueller Matrix. The measurement of the Mueller matrices is obtained using the Dual Rotation Retarder Technique. A theoretical analysis and an experimental validation of this technique are presented. The device is operating in a monostatic configuration, using a semiconductor laser ((lambda) equals 810 nm) to illuminate the target and a telescope to create the image on a CCD matrix. The experiment is controlled by a computer that drives the rotation of the retarders, the digitalization and the encoding of the image. The measured intensity and polarization images are compared and the information contained in the polarization degree are analyzed. Dual images (intensity-polarization) of different targets are presented, showing the experimental validation of the technique. The application of this active imager to the detection and the decamouflage of target buried in the background (same albedo but different polarization degree) is proposed.

Paper Details

Date Published: 8 September 1998
PDF: 8 pages
Proc. SPIE 3380, Laser Radar Technology and Applications III, (8 September 1998); doi: 10.1117/12.327201
Show Author Affiliations
Philippe Clemenceau, Thomson-CSF Optronique (United States)
Sebastien Breugnot, Thomson-CSF Optronique (United States)
Laurent Collot, Thomson-CSF Optronique (France)

Published in SPIE Proceedings Vol. 3380:
Laser Radar Technology and Applications III
Gary W. Kamerman, Editor(s)

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