Post on 31-May-2020
transcript
LASER Detection &
Applications
Alexander Pantazis
SQN LDR / HAF CRC Parnis
(MSc, PhD Candidate)
01-06-17
Alumni Defence Conference
Purpose
Purpose of this presentation is to inform
about the Laser Detection and its
applications especially in Defense and
Safety industry.
Already usage of laser applications are
mentioned and proposals are been given for
consideration and great need for survey !
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LIDAR - LADAR
LIDAR – LIght Detection And Ranging
Main usage at atmospheric and meteorological
applications as well as Ranging meters, low
observable obstacles etc.
LADAR – LAser Detection And Ranging
Main usage at bottom – slant terrain masking
Main difference between LIDAR and LADAR is
in USAGE of the Laser application.
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Types of Laser
Based on the mode of operation
(i) Pulsed Laser systems
(ii) Q-switched systems
(iii) Continuous wave Laser systems
Based on the mechanism in which Population Inversion is achieved
(i) Three level lasers
(ii) Four level lasers
Based on state of active medium used
(i) Gas Laser
(ii) Solid state Laser
(iii) Semiconductor Laser
(iv) Tunable dye Laser
(v) Chemical Laser
Free Electron Lasers (recently developed) 4
Typical LIDAR Equation
SECTIONS
Atmospheric/ Wind LIDAR – LIDAR Network
Space LIDAR – LADAR
LIDARS as MAWS
LIDARS as ALMDS
LADAR and Naval applications
LIDARS as LOAM
LIDARS as SLAL / Strike / Recce
LIDAR and Biological warfare
LIDARS and Detection of Low Observable Targets
LIDARS + RADARS working in synergy
Free Electron Lasers
LIDARS & Simultaneously Detection + Communication 6
Atmospheric LIDAR• Real-time aerosol layers monitoring (0.5-15 km) [ash, desert,
biomass, radioactive, industrial, warfare particles, etc.]
• Real-time cloud layers monitoring (0.5-20 km)
• Real-time Planetary Boundary Layer Monitoring (Meteorological
parameters)
• Long-range transport studies (aerosols, ozone, water vapor)
• Tropospheric ozone profiling (0.5-6 km)
• Water vapor profiling (0.5-8/10 km)
• Fog/visibility lidar detectors
• Industrial emissions (aerosol) monitoring and diffusion studies
(profiling)
• Measurement of aerosol properties (profiling)
• Retrieval of aerosol microphysical properties (profiling)
• Retrieval of aerosol chemical properties (profiling) – Personnel
Health
• Characterization of aerosol particles based on their
optical/microphysical properties 7
Atmospheric LIDAR
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0 100 200 300 400
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0 2 4 6 8 10
1
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0 50 100 150
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-1 0 1 2 3
21 JULY 2009, 01:00:20- 02:42:50 UTC
EXTICNCTION COEFFICIENT
[Mm-1]
Heig
ht a.s.l. [km
]
BACKSCATTER COEFFICIENT
[Mm-1sr
-1]
1064nm
532nm
355nm
LIDAR RATIO
[sr]
ANGSTROEM EXPONENT
Ab532/b1064
Ab355/b532
Aa355/a532
1
2
3
4
0 2 4 0 1 2 0.4 0.6 0.8 1.0
bscat
[Mm-1 sr
-1]
AL
TIT
UD
E A
.S.L
. [k
m]
Aa355/a532
5 7 9
0.0 0.5 1.0
reff
[μm]
1.4 1.6 1.8
complex RI
0.01 0.03
Fine mode
Total
Im Part
Real Part
WVMR
Angrstroem Exp
SSA
21 JULY 2009, 01:00:20- 02:42:50 UTC
Vertical profiles of the aerosol
Optical + microphysical properties
Atmospheric LIDARWater vapor Raman lidar measurements
Atmospheric LIDAR
LIDAR και Ασφάλεια Πτήσεων
3D Lidar application at Braunschweig (Germany) at 355 nm (© Raymetrics S.A.).
3D Lidar at 355 nm
(© Raymetrics
S.A.).
Forward Scatterometer Transmissiometer Scintillometer11
Wind Lidar ApplicationsReal time identification οf disturbances/vertical
wings Contribution to Flight Safety
3D scanning wind
lidar (Wind shear
detection)
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Lidar Applications (aerosol particles real-time identification):
LIDAR Network
• Unique tool for real-time 3D identification of aerosol layers [ash, desert,
biomass, radioactive, industrial, warfare particles, etc.]
Provides EARLY warning on airplanes ! (e.g. AVOID system) 13
Space LIDARS - LADARS
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LIDARS as MAWS for SHIPS
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LIDARS as ALMS
LADARS & NAVAL Detection
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LIDARS as LOAM
LOAM19
LIDARS as SLAL
Strike LIDAR
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Recce LADAR
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LIDAR and Biological Warfare(NATO RECOMMENDATIONS 2010)
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LIDAR and Biological Warfare(NATO RECOMMENDATIONS 2010)
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Lidar Detection of Low observable Targets 3D scanning Lidar for low observable targets
LIDAR + Radar for Aircrafts
Both Acquisition & Targeting working in
Synergy for Low Observable Targets (LOT)
Possible view 26
Free Electron Laser as Laser Gun
LIDARS – Detection + Communication
Photonic systems promise:
• Higher precision
• Less noise
• Higher bandwidth
• Greater flexibility
• Smaller antennas
Radars Vs Laser “radars”
Radars Vs Laser “radars”
SECTIONS
Atmospheric/ Wind LIDAR – LIDAR Network
Space LIDAR – LADAR
LIDARS as MAWS
LIDARS as ALMDS
LADAR and Naval applications
LIDARS as LOAM
LIDARS as SLAL / Strike / Recce
LIDAR and Biological warfare
LIDARS and Detection of Low Observable Targets
LIDARS + RADARS working in synergy
Free Electron Lasers
LIDARS & Simultaneously Detection + Communication 29
Selected Internet sites
• http://www.physics.ntua.gr/~papayannis/
• http://www.raymetrics.com/
• https://www.google.ch/patents/US5850285
• http://www.northropgrumman.com/Capabilities/
AirborneLaserMineDetectionSystem/Pages/def
ault.aspx
• http://usa.selex-
comms.com/internet/?d=1&open0=5338&open1
=5350§ion=COMM&showentry=17089
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Selected Internet sites
• http://waset.org/publications/9997995/lidar-
obstacle-warning-and-avoidance-system-for-
unmanned-aircraft
• http://www.ausairpower.net/ASPC-LIDAR-
Mirror.html
• https://www.yumpu.com/en/document/view/867
1791/rto-tr-set-098-ftp-directory-listing-nato
• http://www.industrytap.com/40-million-laser-
weapon-system-installed-on-a-destroyer/6731
• http://www.bbc.com/news/science-environment-
26665305
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LASER Detection & Applications
Acropolis
Site !
(by Airborne LADAR)
Alexander Pantazis
SQN LDR / HAF CRC Parnis
(MSc, PhD Candidate)
01-06-17
Alumni Defense Conference
Thank you all for attending!