LWIR hyperspectral imaging application and detection of chemical precursors

Hugo Lavoie; Jean-Marc Thériault; François Bouffard; Eldon Puckrin; Denis Dubé

doi:10.1117/12.974605

30 October 2012 LWIR hyperspectral imaging application and detection of chemical precursors

Hugo Lavoie, Jean-Marc Thériault, François Bouffard, Eldon Puckrin, Denis Dubé

Proceedings Volume 8546, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence VIII; 85460J (2012) https://doi.org/10.1117/12.974605
Event: SPIE Security + Defence, 2012, Edinburgh, United Kingdom

Abstract

Detection and identification of Toxic industrial chemicals (TICs) represent a major challenge to protect and sustain first responder and public security. In this context, passive Hyperspectral Imaging (HSI) is a promising technology for the standoff detection and identification of chemical vapors emanating from a distant location. To investigate this method, the Department of National Defense and Public Safety Canada have mandated Defense Research and Development Canada (DRDC) – Valcartier to develop and test Very Long Wave Infrared (VLWIR) HSI sensors for standoff detection. The initial effort was focused to address the standoff detection and identification of toxic industrial chemicals (TICs), surrogates and precursors. Sensors such as the Improved Compact ATmospheric Sounding Interferometer (iCATSI) and the Multi-option Differential Detection and Imaging Fourier Spectrometer (MoDDIFS) were developed for this application. This paper presents the sensor developments and preliminary results of standoff detection and identification of TICs and precursors. The iCATSI and MoDDIFS sensors are based on the optical differential Fourier-transform infrared (FTIR) radiometric technology and are able to detect, spectrally resolve and identify small leak at ranges in excess of 1 km. Results from a series of trials in asymmetric threat type scenarios are reported. These results serve to establish the potential of passive standoff HSI detection of TICs, precursors and surrogates.

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Hugo Lavoie, Jean-Marc Thériault, François Bouffard, Eldon Puckrin, and Denis Dubé "LWIR hyperspectral imaging application and detection of chemical precursors", Proc. SPIE 8546, Optics and Photonics for Counterterrorism, Crime Fighting, and Defence VIII, 85460J (30 October 2012); https://doi.org/10.1117/12.974605

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KEYWORDS

Sensors

Standoff detection

Toxic industrial chemicals

Long wavelength infrared

Interferometers

Hyperspectral imaging

Infrared sensors

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