review of advanced electro-optical surveillance systemficci.in/events/22716/isp/3ikbal-singh.pdf ·...
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1Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Review ofAdvanced Electro-Optical Surveillance System
ByIkbal Singh
VEM Technologies, Hyderabad, (TS)
18 April, 2016
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2Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Mission Requirements of an EO System
• Surveillance
• Surveillance, Acquisition and handing over target to Weapon
system. Known as FCS
• Reconnaissance
• Search and Track
• Missile Warning System
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3Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Sensor Technologies
• Thermal Camera
• Day Camera
• Day Spotter
• SWIR Camera/Spotter
• Eye-safe LRF
• Designator
• Laser Spotter
• Laser pointer
• Laser illuminator
• Low light Camera
• Gated SWIR
• Gyros / resolvers
• GPS / INS / IMUContd.
Key Technologies of a EO System
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4Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Visible NIR SWIR MWIR LWIR(.4-.7) (.7- .9) (.9-1.3) (3-5) (8 - 12)
Atmospheric Window
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5Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Engineering
• Size & Weight
• Robustness
Electrical Engineering
• Actuators
• SSPA
Control Engineering
Electronics
Software• Image Processing
• Change Detection
• Geo Pointing / Geo location
• Image stabilization
• Track before detection• Passive Tracking
Display
Key Technologies of a EO System
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6Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Advance Features of an EO System
Advanced Thermal Sensor
• MWIR HD format detector with 10 or 12 µ pixel for better
image quality & resolution
• IR Zoom Lenses with diffractive optics for compact size
• Ruggedized split micro cooler for longer life (20 thousand
Hrs.)
• Uncooled camera with 17 µ pixel for small UAV application
Contd.MWIR Detectors with Micro-coolers
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7Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Laser Range Finder
• Eye safe LRFs from Diode lasers and Er:Yb glass
lasers are common and are being used.
• Disc Laser is better option for eye safe LRF as it is
compact and heat management is better
Disc Laser LRF modules
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8Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Day Color Camera
• Block cameras are better solution
• They have better resolution as their pixel size is small
• They have high optical and digital zoom
• Both, integration time and iris can be controlled for
wide dynamic range
• They are small in size & weight
Contd.
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9Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Track Before Detection
• Tracking is a common feature but it becomes difficult
to track the target when it is just detected.
• New algorithm is developed for such targets.
Contd.
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10Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Contd.
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11Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Geo-pointing and Geo-location
• In Geo-pointing mode, a command is given to orient
the Gimbal toward a particular GPS coordinates.
System calculates the angle in Az & El to orient the
Gimbal toward that point.
•While, in Geo-location mode, system finds out the
GPS coordinates of the target where Gimbal line of
sight is pointing. GPS mapping of the terrain improves
the accuracy.
Contd.
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12Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Overlay of image on Geo map
• This is an advanced feature which EO system can
provide.
• In this, a real image of sensor is superimposed on
Geo map by matching the GPS coordinates.
• When line of sight moves or zoomed, Geo map
also moves or zooms accordingly.
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13Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Search and track
• Known as IRST if MWIR camera is used.
• EO system continuously scans nX360° and stitched the image
frames in 2 or 4 strips.
• It also detects position change of any target in next frame and
marks, known as change detection.
• Algorithm can remember history of movements of many targets
and can passively track them.
• Target of interest can be zoomed and tracked.
Contd.
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14Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
EO Systems developed
At
VEM Technologies, Hyderabad
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15Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Aerospace & Defence
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Electro-Optics EO-Systems16X , 20X MWIR Zoom lenses
VEM Gimbal Family
Dual mode Seeker
Semi Active Laser Seeker
Various Range of Stabilized GimbalsVEM Gimbal Family
SGA EON-51 SEOS IR Zooms DM Seeker
SAL Seeker
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Electro-Optics SGASalient Features:
• 3 axis 5 Gimbal Stabilization• Surveillance & Target Acquisition• Auto Tracking• Scene lock & Geo Location• Range : 40 km
Performance Specifications:• LOS Freedom
AZ. : n x 360° & EL.: +10°to-100°• Angular Velocity: 60° / sec• Size : 550 mm(D) x 775 mm(H)• Weight : 100 kg
Sensor Specifications• Day Camera 1 : 35 x CMOS Color camera• Spotter : Day Camera• Thermal Imaging Sensor
Detector : InSb FPA 640 x 512 pixels (3.0 – 5.0 µm) Continuous Optical Zoom ( 16 x)
• LDRF / Eye-Safe LRF (ELRF) : 100 mj, 16 ns, 20 pps
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Electro-Optics Dual Band Seeker
Special Features of Seeker:
Optics: Dual Band – Visible & MWIR
Field of Regard: AZ: ±17°EL: +20°& -33°
Stabilization accuracy: < 50 µ rad
Range - Track able: 6.0 Km
- Recognition: 4.0 Km
Sealing: Hermetically Sealed
Ø120
150Weight : 2.5 Kg (approx.)
ZnS Cube with Dichroic Coating
Primary MirrorSecondary Mirror
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Electro-Optics SAL Seeker
Specifications ParametersOptics Type Refractive OpticsFocal length, fmm 28FOV 30 degOperating wavelegth 1064nmDetector Four-quadrantDetector Active area 14mmWeight <1kgDimenstions Dia <105mm; Length <260mmRange <4km
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Electro-Optics IR Zooms
Specifications 20 x IR Zoom 16 x IR Zoom
Spectral Range 3.6 to 4.9 µm (MWIR)
Focal Length, f mm 15mm – 300mm 17.5mm - 275
# F Number 4 5.5
Cold stop to FPA dist mm 19.2 19.2
Image format 640x512, 15µ
Detector Diagonal, mm ± 1.28° to ± 19.67° ± 1.17° to ± 22.3°
Distortion <1% (NFOV) <3%(WFOV) <1% (NFOV) <3%(WFOV)
On-axis MFT at 25cyc/mm > 20% at all zoom positions
Min. Focus Range 50m (NFOV) to 5m (WFOV)
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21Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
•Interferometer 3.39 μ (Zygo )
•Cooled IR Detector (SCD)
•Collimator (CI systems)
•Power suppliers
•Oven + tester & Controller
•Floating interferometer bench (Newport)
•5 degree testing bracket (Newport)
•Assembly & testing tools & equipment (Ophir)
•Beam Extender (Ophir)
•Collimator stand /table (Newport)
•Optical testing Bench (Newport)
•Controller
•PCB Burning Device
•Sealing Testing Device & Glue Dispenser Device
Special equipments under procurement for Electro Optical Assemblies
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22Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
• FLIR, USA
• Wescam, Canada
• Tamam, Israel
• Lockhead Martin, USA
• Raytheon, USA
• Controp, Israel
• Elbit (Elop), Israel
• Carlziess, West Germany
• Sagem, France
• Thales, UK
• Goodrich,USA
• RAFAEL , Israel
• VEM, Technologies, Hyderabad, INDIA
World leading OEMs of EO System
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23Proprietary of VEM technologies Pvt. ltd., Hyderabad, INDIA
Thanks