Η παρουσίαση του Γεώργιου Γεωργούση, ιδρυτή & CEO της Raymetrics στο Open Coffee #91.

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Raymetrics S.A.
32 Spartis, Metamorfosis 14452, Athens, Greece
T +30 210 6655860 F +30 210 2827217
www.raymetrics.com info@raymetrics.com
Dr. George Georgousis
(Founder / CEO)
Raymetrics S.A.

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• Founded in Athens, Greece in 2002 –first commercial manufacturer
• Background in LIDAR science –key advisor is now President of ICLAS
• Manufacturer of backscatter, depolarization and Raman LIDARs
• Systems are for atmospheric applications only
• Company designs systems (including making optical designs), integrates components, maintains systems and creates
software - also services and integration
• Client base is traditionally researchers, but now also operational and commercial
• More than 50 X installations around the world
• Global coverage: Europe, USA, South America, Africa, India, China, Southeast Asia, etc + global network of distributors
• Certified ISO 9001:2008, conform to ISO 28902-1:2012 for visual ranging with lidar, conform to EARLINET requirements

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0
5
10
15
20
25
2011 2012 2013 2014 2015
Number of Sales Per Year

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Meteorological
Agencies
Research Institutes Mines and Heavy
Industry
Aviation
2002... 2016 2017
Military?
2012 2014

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Met Office (UK) German Weather
Service
For Changi
Airport,
Singapore
For Heydar
Aliyev
Airport,
Azerbaijan
For Italian
Environmental
Agency
European
Space
Agency
German Aerospace
Centre
For Centre for Atmospheric
Studies and Earthquake
Research (CASER)
Braunschweig
airport
(testing only)

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RADAR - Radio Detection And Ranging
LIDAR - Light Detection And Ranging
LIDAR is a Remote Sensing Technique:
• Method of obtaining information about an
object or quantity without having the sensor in
direct physical-contactwiththe object.
• This is as opposed to in-situ methods (e.g.
typical thermometers).
• For both active and passive remote sensing
techniques there is a “medium” which carries
the information. For a LIDAR this is light from a
laser.

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6-9 ns
(2.5 m)
(pulse duration)
20 Hz
0.05 s
(15.000 Km)
Continuous wave operation
Pulsed operation
Laser Repetition Rate

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t=0
t
z = t/2 x c
(z=Ranging)

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1. Atmospheric Physics / Meteorology / Pollution Monitoring / Crisis Management (Raymetrics)
2. Aviation / Transportation (Raymetrics)
3. Cultural Heritage
4. Terrain Mapping
5. Automotive (Advanced driver assistance systems-ADAS)
The global market for ADAS technology is forecast to grow rapidly to over $60 billion in revenue by 2020.
6. Real-time robotics
LIDAR sensors are applied for the odometry and mapping in real-time robotic systems. They navigate
robots for obstacle avoidance, sometimes under harsh environments.
7. (Additive) manufacturing: Laser scanners

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• Backscatter Lidar Elastic-Inelastic
Aerosols localization, Aerosol Characterization, Water vapor, Temperature
• Differential absorption Lidar (DIAL)
Air pollution
(O3, CO2, NOx, SO2, HC, Water Vapor)
• Lidar Doppler
Wind speed, direction

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• Aerosol Tracing – Backscatter Lidars
• Aerosol Characterization – Multiwavelength Depolarization Lidarss
• Meteorology – Clouds, PBL – Backscatter lidars
• Aviation: Clouds ceiling, Visibility, Fog incoming bang detection – Backscatter lidars
• Transportation: Visibility and fog incoming band detection (early warning mechanism)
• Crisis Management: Forecasting modelling and plume diffusion (dispersion) models
• System for O3 profiling - DIAL
• Fluorescence for oil spills and biological agents detection

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LIDAR Type: Raman depolarization LIDAR
Deployment Type: Vertical pointing
Model: LR111-D300
Clients: Meteorological Agencies,
Environmental Authorities
Applications: Volcanic ash detection, aerosol/pollution
monitoring, PBL studies, remote
humidity (night only)
LIDAR Type: Raman, depol and/or backscatter LIDAR
Deployment Type: 3D scanning
Model: LR111-ESS-D200
Clients: Airports, Aviation Authorities,
Meteorological Agencies,
Environmental Authorities
Applications: Remote visibility, air quality/pollution
data, 3D cloud base, fog detection, PBL
studies
Option 1: Vertical Option 2: 3D Scanning

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Raymetrics has a background in LIDAR science – still a core market – leading to many
options:
1. 3D scanning systems (backscatter, depolarization, Raman)
2. Vertical systems (backscatter, depolarization,Raman, multi-wavelength)
3. Components (telescopes, WSUs, upgrades)
4. Custom systems (DIAL, lidar stations)
5. Services (mining, leasing for research campaigns, installations)
Large and small vertical
systems
3D scanning systems
Telescopes
Custom LIDARs

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• Accuracy – Performance
• Reliability – robustness
• Automation
• User Friendly (Software and Hardware) – Eye Safety
• Less complexity
• Easy maintenance – From non LIDAR experts
• Reasonable cost

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Rain cover
Outer covering
(double-walled)
Climate control
Rain sensor
Emergency stop
Outdoor-safe
connectionsCastors and
levelling feet

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• Several I/O
• UPS with automatic shutdown and restart after
power outage
• Open Hardware and Open Software architecture
• Fully remotely controlled
• Complete software suite including real-time display
and measurement scheduling
• Web based platform for real time products and
archived data

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LIDAR Type: Raman depolarization LIDAR
Deployment Type: Vertical pointing
Model: LR111-D300
Clients: Meteorological Agencies,
Environmental Authorities
Applications: Volcanic ash detection, aerosol/pollution
monitoring, PBL studies, water vapour
mixing ratio (night only)
• Easy Access to internal Parts
• DPSS or Flash Lamp laser option
• Different protection mechanism
for different environments

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1. Meteorology/Risk Management
• Remote data for air quality/pollution models
• Validation of numerical weather forecast models
• Planetary Boundary Layer structure - including mixing height, up
and down drafts, aerosol load (important for forecasting)
• Pollution plume monitoring
Runway Visual Range (RVR)
Slant Visual Range (SVR)
Model LR111-ESS-D200
3D scanning LIDAR
2. Aviation/Transportation - Meteorology
• 3D cloud base (or remote cloud base)
• Remote visibility measurement
• Fog detection (incoming alert or in-situ)
• PBL (Planetary Boundary Layer
Note: LIDARs are “new” for aviation and meteorology... but the
techniques are actually standard (ceilometers use LIDAR technique for
cloud base; for visibility and fog detection there is an ISO for
calculating MOR, VOR, SOR, SVR, RVR, etc)

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More info you get
Better classification

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Volcanic ash from the Eyjafjallajokull eruption in 2010 detected at
heights of 10 km down to 5 km over a 12 hour period with a LIDAR
built by Raymetrics for National Technical University of Athens (NTUA)
355nm Co-Polar
Night: > 14 km
Day: > 12 km
355nm Cross-Polar
Night: > 12 km
Day: > 11 km
387nm Nitrogen Raman
Night: > 12 km
Day: > 3 km
IMPORTANT: Values above
are achievable with Signal
to Noise Ratio (SNR) > 10
(i.e. very high quality data)

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• LIDAR provides high resolution, high quality data to augment current systems
• E.g. below were two events (A and B) recorded with different equipment in Brazil. ‘A’ was
rain, reaching the ground as light drizzle. ‘B’ was ice clouds and virga.
LIDAR data (Raymetrics) recorded
clouds and precipitation in high detail
Data supplied by CAPES; CHUVA project FAPESP grant 2009/15235-8
X-band RADAR recorded
events in low resolution
with little cloud structure
for event A
K-band Micro-Rain RADAR
recorded no cloud structure
and lost rain at low altitudes
(though rain at low altitudes
was recorded on a fall
velocity profile)
Microwave radiometer
did not record events
(even using different
profiles such as relative
humidity)

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• Improve the forecast of PBL mixing height (e.g. for aerosol loads and how close they are
to the ground)
Data from a Raymetrics LIDAR showing a change in the PBL mixing height (between
18:00 and 19:00) – corroborated by two Radiosondes on weather balloons (red stars).
Data supplied by CAPES; CHUVA project FAPESP grant 2009/15235-8

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• Complex Atmospheric Structure

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• Validate numerical weather forecast models (new field for LIDAR community) – e.g. COSMO
(COnsortium for Small-scale MOdelling)*, Weather Research Forecasting model (WRF)**
• Validation of 3D air quality models
• Improve the forecast of air pollutant 3D dispersion (e.g. particle distinction)
Image shows probably mainly
marine aerosols (blues) with thin
dust layer (green) above and
thicker dust close to ground.
New automatic particle distinction
– particle types are displayed
automatically by colour code.

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Beijing dust storm - satellite imagery (NASA)
Right: Database facility for archived data
Beijing dust storm - lidar data (Raymetrics)
Right: Database facility for archived data
Dust Measurement (Vertical Example)
Notes: Air quality and pollution is usually only measured in-situ (on the ground). Lidar can
offer remote measurement up to 10 or 20 km – pollution altitude - and 3D distribution with
scanning lidar.

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Notes: Met Agencies commonly measure water vapour remotely using radiosondes attached
to balloons – expensive! LIDAR can currently only measure humidity from dusk to dawn (due
to sunlight masking the signal), and this is only currently available for vertical LIDARs, but
this may still provide useful info for Met Agencies.
Water VapourProfiling (NEW!)
Water vapour (humidity) location in atmosphere from a
Raymetrics LIDAR
Raymetrics LIDAR data compared to radiosonde
(balloon) data

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• Multiple 3D scans taken
at 9 min intervals
• Shows time evolution
of airborne pollution
(3D dust tracking,
concentrations and
dispersion, plumes)
• Data can be geocoded
so scans can be viewed
in 3D in applications
such as Google Earth or
GIS
Dust Measurement (3D Scanning Example)

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Runway Visual Range (RVR)
Slant Visual Range (SVR)
• Backscatter Lidar: Aerosols, water vapor, pollution
• Differential absorption Lidar (DIAL)
General Air pollution (O3, CO2, NOx, SO2, HC)
Raymetrics delivers commercial DIAL Ozone systems for profiling
Low Troposphere
Middle Troposphere
Higher Troposphere
And Stratospheric Ozone
Other DIAL system upon request

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¨ Development of a 6-wavelength lidar system for the retrieval of the microphysical and chemical aerosol particle
parametersin the troposphere: Application in the calibration of the satellite-borne CALIPSO lidar system.
¨ Project 06/2006 -12/2007 (Raymetrics, Georgia Institute of Technology , NTUA).
¨ 6-wavelength lidar system coupled with an aerosol model for the retrieval of the microphysical properties, and
water content of the aerosol particles in the troposphere.
¨ These data used in the calibration of the satellite-borne CALIPSO lidar system (Calibration and intercomparison for
the satellite-borne CALIPSO lidar system in the VIS-NIR spectral region over Athens).
CALIPSO combines an active lidar instrument with
passive infrared and visible imagers to probe the
vertical structure and properties of thin clouds
and aerosols over the globe.
CALIPSO launched on April 28, 2006
Space Applications: Validation of Satellite data

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Laser fluorosensors are active sensors that take advantage of the fact that certain compounds in petroleum oils absorb
ultraviolet light and become electronically excited. This excitation is rapidly removed through the process of fluorescence
emission, primarily in the visible region of the spectrum. Since very few other compounds show this tendency, fluorescence is a
strong indication of the presence of oil. Natural fluorescing substances, such as chlorophyll, fluoresce at sufficiently different
wavelengths than oil to avoid confusion. As different types of oil yield slightly different fluorescent intensities and spectral
signatures, it is possible to differentiatebetween classes of oil under ideal conditions (Brown et al. 2000a;
Hengsterman and Reuter 1990; Balick et al. 1997)..
Fluorescence Lidar
ü Quick Market research: No commercial systems are available
yet
ü System Design: it depends strongly on the application
ü Applications (research, up to now) include:
1. Oil spill detection
2. Sea bathymetry
Recent applications (> 2012) include
3. Biological aerosols
Depth derived by
combined
355 + 450 spectrum

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Through extensive knowledge of the sector, Raymetrics is able to work with different companies and
equipment to provide complete integrated solutions, including:
• Wind LIDARs for troposphere and stratosphere
• Microwave Radiometers
• Sun Photometers
• Weather RADARs
• Weather stations
• Many more

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Thank you for your attention