Optique atmosphérique – Illumination thermique et effets de polarisation, résultats de simulation

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Authors
  1. Lahaie, P.
  2. Fortin, P.Y.
  3. Fortin, G.
  4. Ross, V.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN);AEREX Avionics Inc, Breakeyville QUE (CAN)
Abstract
In the framework of its research in the processing and analysis of long wave infrared (LWIR) hyperspectral imagery, Defence Research and Development Canada - Valcartier is interested in atmospheric effects and particularly in the atmospheric polarization effects. In the framework of task C of contract number W7701-125216/001/QCL entitled “Atmospheric Optics”, AEREX Avionics Inc. has received the mandate to study the potential and the difficulties, and also to identify the work to be completed in order to use polarized information in the atmospheric correction processing of airborne hyperspectral imagery. This report presents the results of a series of simulation runs using the Polarimetry phenomenology simulation (PPS) software modeling tool in two typical locations. The atmospheric conditions involve cloudy or non-cloudy sky, with or without aerosols and considering a diffuse or a smooth target. It presents the particularities involved in using the PPS modules and provides results interpretation to answer DRDC’s questions. The study results are as follows. With respect to the usefulness of the LWIR polarization in the atmospheric correction process, it is difficult to conclude for the moment. The study clearly shows that, in the degree of polarization DOP signal read by the sensor, atmospheric contribution is absent : the target is the main polarization source. However, the DOP value read is at most 1 to 2% in the best case scenarios. Having conducted the study with a

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Report Number
DRDC-RDDC-2014-C8 — Contract Report
Date of publication
01 Jul 2013
Number of Pages
68
DSTKIM No
CA038555
CANDIS No
538637
Format(s):
Electronic Document(PDF)

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