3D Aerosol LIDAR - Raymetrics...cloud base height and more. With full 3D scanning capability, a...
Transcript of 3D Aerosol LIDAR - Raymetrics...cloud base height and more. With full 3D scanning capability, a...
Aviation Mining Meteorology3D Aerosol LIDAR
LR111-ESS-D200
• High energy laser emitting ~30 mJ per pulse at 355 nm • Large200mmtelescopedesignedspecificallyforLIDARs• Rangeupto10-15km(withexcellentSignaltoNoiseRatio)• Remotelycontrollablewithfullscanningcapability• Completesoftwaresuiteincludingreal-timedisplayandmeasurementscheduling• OptionsavailablefornitrogenRamanat387nmandCross-Polarizationat355nm• In-builtindustrialgradePCforeasynetworking• Eye-safeaccordingtoEUstandardonlasersafety60825-1:2007• ComplieswithISO28902-1:2012-visualrangingwithLIDAR
Raymetrics’3DScanningAerosolLIDARisanactivelaserremotesensinginstrumentdesignedtoprovideavarietyofimportant informationabouttheatmosphere.AerosolLIDARsmeasuretheparticles,notofmovementofparticlesaswithwindDopplerLIDARs.Thisallowsforapplicationsincludingremotevisibility(SVR,RVR,VOR),fogdetection,remotecloudbaseheightandmore.Withfull3Dscanningcapability,apowerful laserandalargetelescope,Raymetrics’LR111-ESS-D200isprobablythemostpowerfuleye-safe3DscanningLIDARonthemarket.
Thesystememitsaneye-safelaserbeamintotheatmosphere. Laser light is scattered by particlesin the atmosphere and some is returned to a telescope.Becausethespeedoflightisknown,thedistancetoatmosphericlayerscanbedetermined.Fromthepropertiesofthelight,certainatmosphericcharacteristicscanalsobedetermined.
Introduction
Key Features
HowdoLIDARsWork?
Software
Receiver window (telescope)
Emission window (laser)
3D rotation device
Control unit
Castors for mobility
Lockable doors
Umbilical
3D data provided
Softwareprovidedfor...• InstrumentControl• MeasurementScheduling• Alignment• Set-upProcedure• DataAcquisition• DataStorage(Database)• Advanced Analysis• 3DDataVisualizationNote: Integration with software platforms available
3DScanningAerosolLIDAR
LR111-ESS-D200
Climate-controlled LIDAR Head
Climate control
Levelling feet
Laser emission
warning light
Rain sensor
Hardware
• EXPERIENCE:RaymetricsisprobablythemostexperiencedatmosphericLIDARcompanyintheworld,(inoperationsince2002).
• GLOBALREACH:Thecompanyhasinstalledinstrumentsallovertheworld,includinginEurope,NorthAmerica,China,India,Africa,South
EastAsiaandSouthAmerica.
• EXCELLENTCLIENTBASE:Raymetrics’clientlistincludessuchprestigiousorganizationsastheEuropeanSpaceAgency,MeteoFrance,theGermanAerospaceCentre(DLR),theGermanWeatherService(DWD)andtheMetOffice(UK),whichhasanetworkofRaymetricsLIDARsinstalledspecificallyforvolcanicashdetection.Raymetrics3DAerosolLIDARshavebeenusedformeteorologicalandaviationapplicationsincludinginSingapore(NationalEnvironmentAgency),Chile(DirecciónMeteorológicadeChile),France(MeteoFrance),Germany
(SESARproject),Greece(EleftheriasVenizelosAirport)andAzerbaijan(HeydarAliyevInternationalAirport).
• REPUTATION:Thecompanyhasanexcellentreputation,particularlyamongsttheglobalLIDARcommunity.
• POWER:Raymetricsuseslaserswithhigherenergy-per-pulsethanothermanufacturers,meaninggreaterrangeandbetterdataquality.
Note: LIDARs work by plotting every individual pulse - meaning energy per pulse is of the highest importance. Dataqualitycanbeimprovedbystackingmultipleprofilestogether,butthisdoesnotgreatlyimproverange.
• SIZE:Raymetricsuseslargertelescopesthanmostothermanufacturersinordertocapturemoresignal.
Note:Raymetricstelescopesarecustom-designedwiththefocalpointinsidethetelescope,allowing obscurationfromthesecondarymirrortobegreatlyreduced,resultinginupto40%moresignal.
• STANDARDS:ProductcomplieswithISO28902-1:2012-GroundbasedremotesensingofvisualrangewithLIDAR.CompanycertifiedtoISO9001:2008standard.
WhyRaymetrics?
Remote Visibility•SVR,RVR,VOR(VerticalOpticalRange)
Fog Detection•Incomingfogbankdetection•Fogcannotbypassaswithin-situsensors
3D Cloud Base•Remotecloudbase-forforecasting•Totalcloudcover-in3D
Volcanic Ash•Definitivevolcanicashidentification•Altitudesofashlayers
Aerosol Monitoring•Particaldistinction(firesmoke,anthropogenicpollution,volcanicash,dust,marineaerosols)•PlanetaryBoundaryLayer(PBL)-includingmixingheight,upanddowndrafts,aerosolloading•Plumes
Applications
• SVRgivesamoreaccuratemeasureofpilot’svisibility• ISO28902-1:2012meansLIDARisnowastandardmethodof
measuringvisibility
RunwayVisualRange(RVR)iscurrently measured in-situ
LIDARscanprovideSlantVisualRange(SVR)-pilot’svisibility
RVR SVR
CASE 1: Measuring Visibility
• CeilometersuseLIDARtechnique-theyarebasicLIDARs• LIDARisthereforealreadythestandardmethodforcloudbase• LIDARsofferincreasedpower,rangeandcapabilities
Cloud base only measured vertically by ceilometers
LIDARs provide cloud base & total cloud cover in 3D
CloudBase(vertical) TotalCloudCover(3D)
CASE 2: Measuring Cloud
Distance(km)
North South3.0
1.5
0.06.0 6.0
Altitude(km)
Remote cloud heights
0.0
Specifications
EMITTER
Laser energy 30mJ per pulse at 355nm
Repetitionrate 20Hz
BeamExpansion X10
Eye-safe YES(EUstandardonlasersafetyEN60825-1:2007)
Laser Class IV(withinenclosure)
RECEIVER
Size(primarymirror) 200 mm
Fieldofview(FOV) 0.25-3mrad(useradjustable)
Overlap <200m(withfactorysetFOV)
DETECTIONUNIT
Wavelengthsdetected 355nmco-polar
Wavelengthoptions(forparticledistinction) 355nmcross-polar387nmnitrogenRaman
Spatialresolution 7.5m
Temporalresolution 1secsingleshot10secsmultipleacquisitionmode(userselectableupwards)
FWHMbandwidth Approx.0.5nmperwavelength
Detectionmodes Analogueandphotoncountingfornearandfarfieldmeasurement
GENERAL
3DScanning 3600azimuth,900zenith
InternalPC IndustrialgradePCrunningWindows
Climate control HeatingandAirConditioningunitsforbothLIDARHeadandControlUnit
Software Fullsuiteofsoftwaresuppliedfor:• InstrumentControl• MeasurementScheduling• SystemAlignmentandSet-upProcedure• DataAcquisition• DataStorage(Database)• DataAnalysis• DataVisualization
Automation Remotelyoperablewithmeasurementschedulingforautomation
Warranty 1yearasstandard
Training 3 day installation and training course on site as standard
ADDITIONAL
EffectiveRange >10-15km*
Environmental tolerance -15to+450C
Dimensions Approx.1.8mx1.0mx1.0m(HxWxD)
Weight Approx.220kg
Power 110-240V,50-60Hz(standarddomesticpowersupply).Peakcurrent25Amps.
*Effective ranges depend on atmospheric conditions and integration times.
RaymetricsS.A.32Spartis,Metamorfosis14452,Athens,GreeceT+302106655860F+302102827217www.raymetrics.cominfo@raymetrics.com