A new passive polarimetric imaging system collecting polarization signatures in the visible and infrared bands

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Authors
  1. Lavigne, D.A.
  2. Breton, M.
  3. Fournier, G.
  4. Pichette, M.
  5. Rivet, V.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);AEREX Avionics Inc, Breakeyville QUE (CAN)
Abstract
Electro-optical imaging systems are frequently employed during surveillance operations and search and rescue missions to detect various targets of interest in both the civilian and military communities. By incorporating the polarization of light as supplementary information to such electro-optical imaging systems, it may be possible to increase the target discrimination performance considering that man-made objects are known to depolarize light in different manners than natural backgrounds. Consequently, many passive Stokes-vector imagers have been developed over the years. These sensors generally operate using one single spectral band at a time, which limits considerably the polarization information collected across a scene over a predefined specific spectral range. In order to improve the understanding of the phenomena that arise in polarimetric signatures of man-made targets, a new passive polarimetric imaging system was developed at Defence Research and Development Canada - Valcartier to collect polarization signatures over an extended spectral coverage. The Visible Infrared Passive Spectral Polarimetric Imager for Contrast Enhancement (VIP SPICE) operates four broad-band cameras concomitantly in the visible (VIS), the shortwave infrared (SWIR), the midwave infrared (MWIR), and the longwave infrared (LWIR) bands. The sensor is made of four synchronously-rotating polarizers mounted in front of each of the four cameras. Polarimetric signatures of man-made objects were acqui
Report Number
DRDC-VALCARTIER-SL-2009-106 — Scientific Literature
Date of publication
01 May 2009
Number of Pages
9
DSTKIM No
CA032723
CANDIS No
531922
Format(s):
Document Image stored on Optical Disk

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