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(CRTI Project: 07-0179RD) Explosive Vapors Standoff Detector – Multi-Option Differential Detection and Imaging Fourier Spectrometer (MoDDIFS). J.-M. Thériault , E. Puckrin, H. Lavoie, F. Bouffard and S. Désilets DRDC Valcartier Pierre Caron , PM - Public Safety Canada.

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slide1
(CRTI Project: 07-0179RD) Explosive Vapors Standoff Detector – Multi-Option Differential Detection and Imaging Fourier Spectrometer (MoDDIFS)

J.-M. Thériault, E. Puckrin, H. Lavoie, F. Bouffard and S. Désilets DRDC Valcartier

Pierre Caron, PM - Public Safety Canada

Public Security S&T Summer Symposium 2009

Ottawa, June 16-18, 2009

crti project 07 0179rd explosive vapors stand off detector moddifs project
CRTI Project: 07-0179RDExplosive Vapors Stand-off Detector MoDDIFS* Project
  • Needs:
    • Crime Prevention associated with Illicit Products Fabrication by Clandestine Laboratory
  • Project Objectives:
    • To develop leading edge Infrared (IR) hyperspectral methods and sensing technology and optimize it for the standoff detection of explosive vapors and precursors.

* MoDDIFS: Multi-options Differential Detection and Imaging Fourier Spectrometer

slide3
Outline of Presentation
  • Introduction: Passive Standoff Detection of CWA Vapours:
  • Differential detection approach
  • CATSI* and CATSI EDM

Passive Standoff Detection of Explosives and Precursors:

  • Differential and imaging approach
  • MoDDIFS sensor project
    • Spectral signatures of explosives and precursors
    • Option-1 for vapours
    • Option-2 for liquids and solids

*CATSI – Compact Atmospheric Sounding Interferometer

direct vs differential detection
IR Spectroscopy

IR

Direct Approach

Differential Approach

Direct vs Differential Detection
  • Difficult Problem ?
    • Atmosphere Emission
    • Background emission
    • Implies large clutter/signal ratio

IR Hyperspectral Sensing

LWIR (7-13 mm)

differential ftir spectroscopy with catsi
Target FOV

Cloud

Ref FOV

Differential FTIR Spectroscopy with CATSI*

* CATSI - Compact ATmospheric

Sounding Interferometer

  • Novel Sensing Approach
    • Double-beam FTIR Spectroscopy
    • Optimized for real-time background suppression
  • Milestones
    • Develop CATSI instrument (1996-2000)
    • Detection algorithm (1998-2007)
    • Int`l Trials: Short (0.1 km), mid (1.5 km) and long (5.7 km) ranges (1998-2004)

IR Hyperspectral Sensing

LWIR (7-13 mm)

differential detection sensor development catsi e ngineering d evelopment m odel
Differential Detection Sensor Development: CATSI Engineering Development Model

CATSI EDM

  • Development: 2005-2009
  • Militarized for CF
  • Milestone (Sep 2008):
    • Autonomous detection of CWA simulants at 3 and 5 Km ranges
slide8
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CRTI Project: 07-0179RDCATSI Imager: MoDDIFS*(New Generation)

Program:

CBRNE Research and Technology Initiative (CRTI)

MoDDIFS

(CATSI Imager)

  • Project Objectives:
  • Standoff detection and identification of illicit products fabrication
    • Primary: Explosives and Precursors
    • Parallel: CWAs, Drugs, IEDs

Partners/End Users :

- Defense R&D Canada

- Public Safety Canada

- Royal Canadian Mounted Police (RCMP)

- HAZMAT Division - Montreal

- Montreal Port Authority - Port of Montreal

- Montreal Advisory Committee on Antiterrorism

-Industries: Telops, AEREX

Gas Detection

Start-End: 07/08 to 2011

* MoDDIFS: Multi-Options Differential Detection and Imaging Fourier Spectrometer

slide9
Adet=1mm

CATSI

Adet= 0.03 mm

MODDIFS

DTel= 12 in.

DTel= 12 in.

Aplume=10 cm

Aplume=10 cm

A)

B)

High Spatial Resolution Recording:

Strategy

CATSI

10 cm

ACETONE

slide11
Gas Signatures

Detection Scenarios:

leaking windows

leaking doors

chimneys, vents

slide12
500 mL acetone

in fumehood

slide13
- 22 Aug 2007
  • 500 mL acetone in glass container in fume hood
  • Detection @ 100 m with vent on low

Acetone

slide14
Experiment-1

Garden shed venting acetone & HNO3

moddifs option 1 long range for vapours
FOV 1

FOV 2

2.8 x FOV width

MoDDIFS Option-1: Long Range for Vapours
  • Main optical specifications: Telops (main Contractor)
moddifs option 2 polarization for liquids and solids
FOVMoDDIFS Option-2: Polarization for Liquids and solids
  • Main optical specifications: Telops (main Contractor)
slide18
PHASE I – Spectral Signatures : Identification of the IR spectral signatures of explosive and their precursors. (completed June 09)

PHASE II – System Specifications and Prototype Construction: Development of system specifications, detection algorithm and construction of the MoDDIFS prototype. (completed Aug 2010)

PHASE III – System Validation and Testing: Verify, validate, optimize the MoDDIFS prototype through

laboratory experimentations

open air trials under realistic scenarios recommended by end users. (completed - July 2011)

CRTI Project: 07-0179RDProject Summary / Phases

slide19
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Potential Applications for Detection & Identification

MoDDIFS

Vapours (2nd generation)TICs

Liquid contaminants & spills Surfaces

Suicide bomber

  • Vapours (2nd generation)CWA

Explosives IEDs

  • Explosives
    • Powders

Liquid aerosols

contaminants

Illicit explosive and drug fabrication

differential spectroscopic techniques
Differential Spectroscopic Techniques

Existing and Potential Standoff Explosives Detection Techniques

Committee on the Review of Existing and Potential Standoff Explosives Detection Techniques, National Research Council,

The National Academies Press, 148 pp., Washington, D.C., 2004

Download free sample PDF : http://www.nap.edu/catalog/10998.html

Important recommendation stated:

“Research in the IR spectral range is needed to study the spectroscopic properties (e.g., thermal emissivity versus wavelength) of human skin, clothing, and other relevant materials. This information might lead to differential spectroscopic techniques that could improve IR imaging for explosive detection”.

drdc valcartier approach dual beam ftir catsi
target

reference

DRDC Valcartier Approach:Dual Beam FTIR - CATSI

Input 1

Out of phase (180o)

Input 2

4/32

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