CATSIEDM– ANewSensorforRealͲTimePassive
StandoffDetectionandIdentificationofChemicals
J.ͲM.Thériault,H.Lavoie,F.Bouffard(DRDCValcartier,Qc,Canada)
P.Lacasse(AEREXAvionique Inc.Qc,Canada)
Y.Montembeault,V.Farley andL.Belhumeur(Telops Inc.,QcCanada)
SPIEDSSOrlando,5Ͳ9April2010
CBRNESensingXI
Defence Research and
Development Canada
Recherche et développement
pour la défense Canada
Canada
Outline of Presentation
• CF Need for Wide Area Chemical Monitoring
• Our Research Solution – CATSI*
• Our Militarized Solution - CATSI EDM
• Optical Configuration
• 3- Steps Algo Detection Chain
• Field Test Results
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*CATSI – Compact Atmospheric Sounding Interferometer
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Challenge: Wide Area C/B Monitoring
protected
area
point
sensor
CB
attack
stand-off
sensor
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Our Solution
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Passive Detection Principle
Chemical Cloud
•• Technique
Techniqueisisbased
basedon
onIR
IR
spectroscopy
spectroscopy
•• IR
Emitted
spectrum
contains
IR
Emitted
spectrum
contains
cloud
cloudsignature
signature
•• Strength
ofofemission
emissiondepends
depends
ofStrength
background-to-cloud
of background-to-cloud
temperature
temperaturecontrast
contrast
IR
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Passive Sensor:
Direct vs Differential Detection
Direct
Slant Path
6 10
2 10
-6
4 10
-6
2 10
-6
-6
L
4 10
6 10
-6
L
clear
-6
0
700
gas
GL
800
900
0
1000
1100
Wavenumber (cm
1200
-1
1300
)
Differential
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1995 – 2005 : CATSI*
(research)
5.7 km
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*CATSI – Compact Atmospheric Sounding Interferometer
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Differential Detection Approach:
Dual Beam FTIR - CATSI
Input 1
Out of phase (180o)
Input 2
+ ; FT
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CATSI Engineering Development Model
CATSI EDM
Passive Standoff Detector
for CWAs and TICs
Mandate and funding
D CBRN D 5, Client
DCSEM 5-5, Project Sponsor
Optical Head
P&T
CPC &
Local Console Power
Converter
Specifications
9
9
9
9
9
9
9
Project Objective
To complete the engineering development
of CATSI so it can be considered as a
viable procurement option to meet the CF
Area Detection and Identification System
(ADIS) Project.
Project Members
CWAs & TICs Detection up to 5km
Main Contractor:
• Telops Inc (Contract started March 05)
Ruggedized for Military Ops
Scanning; 360° x 50°
DRDC Valcartier Tasks
Op temperature: - 32 to 49°C
• Scientific Autority of Contract
Day/Night Ops
• Detection and Identification Algorithm
NBC Suit & NVG Compatible
• – Valcartier
Test & •Evaluation
Defence R&D Canada
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Autonomeous Real-Time D&I
CATSI EDM:
Split FOV Optics and Interferometer
Shutter
FOV-1
FOV-2
Shutter
Telescope
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Double-beam FTIR
spectrometer
• Spectral band: Long Wave
• MCT detector
• Resolution: 4 to 16 cm-1
• 4-inch telescope
• 10 mrad FOV
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CATSI EDM:
Algorithm Chain Overview
measurements
Detection
algorithm
candidates
(decides if measurement
is a candidate or a
background)
Confirmation
algorithm
(identification and
quantification, false
alarm mitigation)
results of
analysis
Background
database
Signature
database
Decision
alarm
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(alarm raised if
parameters satisfy
thresholds)
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CATSI EDM at ADIS IPT:
Field Tests on 3.7 & 5 km:
DRDC Valcartier, 15-24 Sep 2008
CATSI EDM
Setup
• Field Trial: Conducted under
realistic field conditions at 3.7 and
5 km from the cloud release point
Release point at 5 km
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ADIS Invitational Performance Trial (IPT)
Details
• Sponsor: CFs
• Test Rules/Requirements:
•Gases: Unknown SF6 or F134 or No Gas
•Release: Unknown time in a 5 minutes window
•Cloud Size: > 37 m @ 3.7 km ; > 50 m @ 5 km
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Example of Results for F134:
Step-1 – Detection
Detection Mode:
•Wide area scanning
•Acquire direct and
differential measurements
•Update Background
Database for signature
detectors
•Apply processing
detectors (50 signatures)
F134
•Select gas candidates
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Example of Results for F134:
Step-2: Confirmation
Step-3: Alarm
Confirmation Mode:
•Local Scanning near
target
•Physical Model fit the
CL using Direct &
Differential
Alarm:
Declared if r2 and CL
satisfy predefined values
F134
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5 10
3 .7 k m (D e te c tio n )
18 -0 9 -0 8 -6 3R
-8
Field Test Results
Radiance (Watts/cm -sr-cm )
-1
-1
-8
0
-8
A)
80 0
9 00
1 0 0 0 1 1 00 1 2 0 0 1 30 0 1 4 00
W ave num ber (cm )
0
SF6
-4 10
-8
-8 10
-8
-7
M e a su red
B e st F it
-8
6 10
-8
8 00
900
1 0 0 0 1 1 00 1 2 0 0 1 3 0 0 1 40 0
-1
W a ve num ber (cm )
6 10
-8
4 10
-8
5 k m (C o n firm atio n )
23 -0 9-0 8-2 2
M e a sure m e nt
B e st F it
2 1 0 -8
2
2
8 10
70 0
C)
3 .7 km (C o n firm a tio n )
1 8 -09 -0 8 -63R
-1
Radiance (Watts/cm -sr-cm )
700
-1
1 10
-8
-8
-1
-2,5 1 0
-5 1 0
4 10
2 10
B)
4 10
2
2
2,5 1 0
Radiance (Watts/cm -sr-cm )
Radiance (Watts/cm -sr-cm )
F134
5 k m (D e te c tio n )
2 3 -0 9 -0 8-2 2
-8
-2 1 0
-8
-4 1 0 -8
-6 1 0
-8
Defence R&D Canada – Valcartier
•
-8
-8
70 0
0
800
9 00
1 0 0 0 11 0 0 1 2 0 0 1 30 0 1 4 0 0
-1
W ave nu m ber (cm )
-8 1 0
D)
7 00
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800
900
10 0 0 1 1 00 12 0 0 1 3 0 0 1 40 0
-1
W a ve nu m be r (cm )
ADIS IPT, Sept 2008: CATSI EDM Results
CATSI EDM exceeded the test requirement
3.7 km ejection point (300 mm lens)
3.7km
5 km ejection point (900 mm lens)
104 test events
Probability of detection: > 80% at 95% confidence
5 km
99 test events
Probability of detection: > 80% at 95% confidence
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Summary
• The chemical threat can be efficiently assessed
through passive standoff detection
• Years of research at DRDC Valcartier lead to the
development of a field instrument, CATSI EDM
• CATSI EDM searches for contaminant signatures
and autonomously raises alarms
• CATSI EDM successfully completed testing
achieving a probability of D&I of 80% with a 95%
confidence requirement.
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Questions
?
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