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Proceedings Paper

iCATSI: multi-pixel imaging differential spectroradiometer for standoff detection and quantification of chemical threats
Author(s): Florent Prel; Louis Moreau; Hugo Lavoie; François Bouffard; Jean-Marc Thériault; Christian Vallieres; Claude Roy; Denis Dubé
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Paper Abstract

Homeland security and first responders are often faced with safety situations involving the identification of unknown volatile chemicals. Examples include industrial fires, chemical warfare, industrial leak, etc. The Improved Compact ATmospheric Sounding Interferometer (iCATSI) sensor has been developed to investigate the standoff detection and identification of toxic industrial chemicals (TICs), chemical warfare agents (CWA) and other chemicals. iCATSI is a combination of the CATSI instrument, a standoff differential FTIR optimised for the characterization of chemicals and the MR-i, the hyperspectral imaging spectroradiometer of ABB Bomem based on the proven MR spectroradiometers. The instrument is equipped with a dual-input telescope to perform optical background subtraction. The resulting signal is the difference between the spectral radiance entering each input port. With that method, the signal from the background is automatically removed from the signal of the target of interest. The iCATSI sensor is able to detect, spectrally resolve and identify 5 meters plumes up to 5 km range. The instrument is capable of sensing in the VLWIR (cut-off near 14 μm) to support research related to standoff chemical detection. In one of its configurations, iCATSI produces three 24 × 16 spectral images per second from 5.5 to 14 μm at a spectral resolution of 16 cm-1. In another configuration, iCATSI produces from two to four spectral images per second of 256 × 256 pixels from 8 to 13 μm with the same spectral resolution. Overview of the capabilities of the instrument and results from tests and field trials will be presented.

Paper Details

Date Published: 13 October 2011
PDF: 12 pages
Proc. SPIE 8189, Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security, 81890F (13 October 2011); doi: 10.1117/12.898182
Show Author Affiliations
Florent Prel, ABB Bomem Inc. (Canada)
Louis Moreau, ABB Bomem Inc. (Canada)
Hugo Lavoie, Defence Research and Development Canada, Valcartier (Canada)
François Bouffard, Defence Research and Development Canada, Valcartier (Canada)
Jean-Marc Thériault, Defence Research and Development Canada, Valcartier (Canada)
Christian Vallieres, ABB Bomem Inc. (Canada)
Claude Roy, ABB Bomem Inc. (Canada)
Denis Dubé, Defence Research and Development Canada, Valcartier (Canada)


Published in SPIE Proceedings Vol. 8189:
Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security
Roberto Zamboni; Mark T. Gruneisen; Colin Lewis; Miloslav Dusek; Douglas Burgess; François Kajzar; Attila A. Szep; John G. Rarity, Editor(s)

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