L I D A R S Y S T EM
Model PL２B１D
Two-Wavelength (1064nm, 532nm) Dual-Polarization (532nm) Lidar System: NIES model**The model used in AD-Net, an Asian component of GAW Aerosol Lidar Network (GALION)
Model PL2B1D is an instrument which transmits a laser beam to the atmosphere and receives backscattered lightfrom aerosols . Model PL2B1D is useful for observing profiles of backscattering coefficient or extinction coefficient.
With the dual-polarization measurement function, non-sphericity of scatterers can be measured.

GeneralLIDAR for measuring the dust and aerosols distribution in the atmosphere

General features
The LIDAR shall observe vertical distributions of mineral dust and air pollution aerosols continuously bytransmitting the laser pulses and receiving the returned scattering signals.
The LIDAR shall observe mineral dust distribution with the Dual-Polarization Dual-Polarization LIDAR
method. The LIDAR shall display the backscattering signal intensities and the depolarization for monitoring
the observation status.
It shall also process the data to dorive the extinction coefficients of mineral dust and air pollution
aerosols, the attenuated backscattering coefficient, etc.

Components
Laser transmitter / receiver unit
Measurement control / data processing system and software

PREDE CO., LTD.
Sasamoto Bldg 26-8 Kamidaira 1-chome Fussa-shi 197-0012 Tokyo Japan
TEL+81-42-539-3755 FAX +81-42-539-3757
URL http://www.prede.com/
e-mail sales@prede.com

Specification
Light source

Flash lamp pumped Nd:YAG laser

Output energy

20 mJ (532nm) 20 mJ(1064nm)

Repetition rate

10 Hz (typical) / 20 Hz (max)Telescope

Diameter 20 cm

Detector

Field of view 1 mrad. (typical)

Transient recordersystem

Accuracy12 bits
Vertical Resolution 6 m
Recorded Height Range 0 - 24 km
Temporal Resolution 15 min (typical)

Measurement control

Automatic, programmable and remote control

Data processing system

Standard data products:
attenuated backscattering coefficient (1064nm, 532nm),
volume depolarization ratio (532nm), total aerosol extinction
coefficient (532nm), dust extinction coefficient (532nm),
spherical-aerosol extinction coefficient (532nm), planetary
boundary layer height (mixed layer height), cloud baseheight.

Power requirements

100 V AC 50/60 Hz 10 A

Transmtter

Receiver

Data acquisition

This LIDAR system is designed by NIES (National Institute for Environmental Studies) (JAPAN) andthe function Is guaranteed by NIES.
However the laser system is maintained by QBIC LASER SYSTEMS INC..
The below image is a example of a installed LIDAR system.(at NIES).
The Skylight window with heater, Computer rack, Table, Chair shown in the image are optional.
We would be glad to have consulting service for installation with customers.
As a option we could also set up containers.

References
A. Shimizu, A., N. Sugimoto, I. Matsui, K. Arao, I. Uno, T. Murayama, N. Kagawa, K. Aoki, A. Uchiyama, andA. Yamazaki, Continuous observations of Asian dust and other aerosols by polarization lidar inChina andJapan during ACE-Asia, J. Geophys. Res., 109, D19S17, doi:10.1029/2002JD003253, 2004.
N. Sugimoto, I. Uno, M. Nishikawa, A. Shimizu, I. Matsui, X. Dong, Y. Chen, H. Quan, Record heavy Asian
dust in Beijing in 2002: Observations and model analysis of recent events, Geophysical Research Letters,Vol. 30, No. 12, 1640, doi:10.1029/2002GL016349,2003.
N. Sugimoto, I. Matsui, A. Shimizu, T. Nishizawa, Y. Hara, C. Xie, I. Uno, K. Yumimoto, Z. Wang, S-C.
Yoon, Lidar Network Observations of Troposheric Aerosols, Lidar Remote Sensing for Environmental
Monitoring IX, edited by Upendra N. Singh, Kazuhiro Asai, Achuthan Jayaraman Proc. of SPIE Vol. 7153,
2008 doi: 10.1117/12.806540.