electro-optic systems integration laboratory australian government department of defence shane kelly...
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Electro-Optic Systems Integration Laboratory
Australian Government
Department of Defence
Shane Kelly Electro-Optic Countermeasures Group
Electronic Warfare & Radar Division, DSTO
Overview
EW SIL Virtual environment for HWIL
EO SIL Equipment Applications Signature Generation Simulation Motion False Alarm Environments Requirements on Sources and Source Capability
• LED
• DMD
Future Plans
EW Systems Integration Laboratory
HWITL/HITL virtual environment (EW SIL) EO SIL – MAWS, LWR RF Systems Virtual MANPADS, RPG Virtual Cockpit
• Demonstrated real-time integration
with CECOM HITL
Software models
EO Systems Integration Laboratory Facilities
Instrumented Threat Warning Systems 47/54/57/60 VVR-1
Stimulator Instrumentation (UV) Baringa, Hydra, Mallina, Real-time sources
(UV LED Insertion under contract) HiFi Signature Generation Sensor Motion Control Real-time shot truthing Control Software
Simulation Definition Simulation Execution
• Automatic• Manual• Networked
Analysis
Sensor/System Evaluation
Sensor Characterisation Sensitivity, FOV, fault verification
Laboratory replay of trials Pd determination Engagement time-lines
Virtual trials Utilising high fidelity signature generation
Stochastic False Alarm Comparison Currently unable to replicate:
Atmospheric Scatter Multiple targets (~ 100) in repeatable way Atmospheric Scintillation (yet)
High Fidelity Signature Generation Parameterisation of Off-axis Scattering Intensity Calculation
(OSIC) + Occlusion Model Inputs
Sensor Parameters Threat, Sensor positions and orientations Threat emissions and Atmospheric Conditions
Output Photon Intensity distribution
Photon distributions generated off-line into 6-D look-up table Coupled with appropriate fly-out model
Generates scene of distributed photons for each time-step of fly-out model
• Better than real-time demonstrated (provided intensity not too great)
Currently only direct and near-axis scattered component implemented in EO SIL
Shot Truthing
Stimulator Shot Truthing Core to qualification of trial replay capability Instrumentation of actual field radiometers
• Immediate determination of deviation from intended shot
Includes elementary image truthing• Object counting for FAR analysis• Potential motion truthing
Lateral Motion
Laboratory False Alarm Environments
Requirements Multiple sources Varying radiometric signal characteristics
• Attack/sustain/decay + modulation
Independent motion
Stochastic Evaluation Reflected tinsel/disco-ball
Arbitrary Stochastic Evaluation UV LED
Eject Spike
BoostIgnition
Boost
Sustain
5
15
0 2 4 6
Time (s)
Ra
diat
ed
Po
we
r (W
/sr)
Rocket Motor Emissions
IncandescentSource
2.5
7.5
2 4 6
Time (s)
Irra
dian
ce (W
/cm
2 )
Eject Spike
BoostIgnition
BoostSustain
Target Sensor Irradiance
2.5
7.5
2 4 6
Time (s)
Irra
dian
ce (W
/cm
2 )
2.5
7.5
2 4 6
Time (s)
Irra
dian
ce (W
/cm
2 )
Eject Spike
BoostIgnition
Boost
Sustain
Including Signal Noise
IncandescentSource
Sources Incandescent Lamp with Quartz Envelope
MEON/Baringa RTS Mallina
Alternate Sources Laser
• Expensive Arc
• Difficult to control• Problems emitting low amplitude• Problems when in motion• Typically noisy
UV Light Emitting Diode• Dramatically Improved frequency response• Reduced noise level
Digital Mirror Device• Reproduce scene, or• Modulate signal with high resolution• Good frequency response
0 4 8 12 160.4
0.5
0.6
0.7
0.8
0.9
1
1.1
Frequency (Hz)
Nor
mal
ized
Fre
quen
cy R
espo
nse
0.9
0.5
156
UV LEDs
Available at 5nm increments across 250 – 300 nm ~20nm FWHM Can replicate some spectral content
High power Significantly increase safety issue over QH
Frequency response > 10 KHz Mechanical modulation no longer required Replication of noise
Low emission noise ‘The optimum UV stimulation device’
Have demonstrated reproduction of 5ms pulse Schedule for insertion in EO SIL before end FY 09/10
Atmospheric Scattering
Total = Direct + Forward Scattered
Direct
Forward Scattered (1st order)
Forward Scattered (2nd order)
UV Projector
XGA Digital Mirror Device 1024 x 768 binary mirrors ± 12 degrees mirror tilt 13.68 µm mirror pitch Supports 9.7K frames/sec
DLP Applications in EO SIL
Multiple benign and threat sources
All sources can move independently
Accurate representation of scattered component
Temporal control of source intensity
Future Work
Qualified replication of field trials Improved Noise Modelling
Engaging PhD candidate under tri-party agreements
Optical replication of virtual engagements Implementation of UV LED Further development of UV scene projection Transition to infrared
Key Staff
DSTO Shane Kelly (Threat Warning Section Lead) Ray Darling (EW SIL Lab Manager) Stephane Collignon (EO SIL Lab manager) Bill Field (Senior Technical Officer) Mark Panizza (UV Scene Parameterisation)
BAE Systems Australia Victor Florea (Optical Scientist) Tri Luu (Software Engineer) Langdon Davis (Software Engineer)
Questions?