• Optical Fog Sensor
  • Fog Monitoring System
  • LiDAR for Meteorogical Application
  • Mobile LiDAR
  • LiDAR for other Application
Optical Fog Sensor
Fog Monitoring System
LiDAR for Meteorogical Application

Lidar for detection a sea fog (JSL1)


◦ Laser : Q-Switched Nd:YAG
– Polarization : Linear polarized
– Wavelength(nm) : 532 or 355
– Pulse energy(mJ) :  ≥100 @ 532 nm
– Pulse Repetition : ≥ 20
◦ Telescope : Cassegrain type
– Diameter(mm) : 200
– Focus length(mm) : 2000
– FOV(mrad) : < 1.5
◦ Detector : PMT
– Filter(nm) : 1
◦ DAQ(Digitizer) : PC compatible board
– Data transfer : PCI or LAN or USB
– Resolution : ≥ 3 m (adjustable)
– Data accumulation : Adjustable
◦ Scanning Device : Roof-top type
– Angle : 0 ~ 360o (Azimuth), 0 ~ 90o (Elevation)
– Resolution : 0.1 o
◦ Software : Hardware control ,  Data processing program

Lidar for detecting and measuring yellow dust


– Yellow dust monitoring, aerosol and cloud physics studies
– Observation of shape, vertical distribution, and time series variations of fine dust
– Depolarization ratio(532nm –P, -S polarized light)
– 24hours of continuous observation and automatic data transfer
– Differential Absorption Lidar (DIAL)
– High spatial resolution (Hight speed DAQ)
– Installation at the Korea Meteorological Administration(Baengnyeong, Munsan, Gunsan)
Mobile LiDAR
  • Basic Specifications
    • Maximum measuring distance : over 20km
    • Distance resolution : over 3m
    • Accuracy : +-3m
  • Transmission
    • LASER
      • Form : High output Nd:YAG by Flashlamp pumping
      • Wavelength : 1064nm(Infrared), 532nm(Visible light), Pulse Repetition Frequency(PRF) over 30Hz
    • Beam expander : over 5 times
    • Wedge pair Optical Alignment System
  • Receiver
    • Receive telescope : Over 200mm diameter
    • Spectrum analyzer : Analog channel, Photon counting channel : 1064nm, 532 nm(horizontal & vertical polarized)
    • Photon detector : PMT APD
  • Signal handling unit
    • Analog mode: Waveform digitizer, over 4 channels, over 12bit/50MHz
    • Photon counting mode: 4 channels, over 20ns BIN time
LiDAR for other Application

Lidar for detecting chemical attack (JSL4)


  • Early warning for aerosols and biochemical particle

 

  • Auto attention system on vehicle (Roof-top)

 

  • Weather information and mapping integration system

 

  • Near field detection

 

  • High repetition low-output LASER

 

  • For G-20 security purposes

Lidar for detecting aerosols (JSL5)


  • For the study of characteristics and distributions of polar and oceanic aerosol

        – Mounted on icebreaker ship

  • Watching aerosol shape and vertical/regional distribution

         – Polar region, Temperate zone, Tropics

  • Depolarization ratio(532nm –P, -S polarized light), High spatial resolution(2.5m)
  • Constant temperature and andi-vibration system
  • 24hours of continuous observation and automatic data transfer

 

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