LIDAR RESEARCHER:
Ed Eloranta
RESEARCH ASSOCIATES: Igor Razenkov, Ralph Kuehn, Bob Holz
MAILING ADDRESS: 1225 W. Dayton St, Madison, WI 53706
TELEPHONE NUMBER: 608-262-7327
FAX NUMBER: 608-262-5974
E-MAIL ADDRESS: eloranta@lidar.ssec.wisc.edu
WEB SITE: http://lidar.ssec.wisc.edu
DATE: 10-Aug-2001
LIDAR LOCATION Madison, Wisconsin, USA ( LAT., LONG.):
(both systems are transportable)
SITE ELEVATION: ~900 feet above MSL
PARAMETER(S) OR CONSTITUENT(S) MEASURED:
High Spectral ResolutionLidar
(optical depth, backscatter cross section, scattering cross
section, depolarization, backscatter phase function)
Volume Imaging Lidar
(boundary layer depth, Winds, turbulence,
aerosol spatial and temporal correlation functions, boundary layer
circulations, cirrus cloud structure)
RESEARCH OBJECTIVES AND SPONSOR: current projects--1) remote
measurement of ice-water content in cirrus, 2) fabrication of a
High
Spectral Resolution Lidar for unattended deployment in the Arctic,
3)
Computation of multiply scattered contributions to satellite-borne
laser altimetry signals. 4) Validation of Large-Eddy-Simulation
models
using Volume Imaging Lidar data.
MEASUREMENT TECHNIQUE: High Spectral Resolution Lidar and Volume
Imaging Lidar
MEASUREMENT RANGE: HSRL to ~30 km altitude, VIL in boundary layer
~18 km and 60-100 km for cirrus mapping.
VERTICAL RESOLUTION: 15 m both systems
FREQ. OF MEASUREMENT (TYPICALLY): currently irregular
MEASUREMENT TIMES (TYPICALLY): currently irregular
LASER TYPE AND WAVELENGTH (s): Nd-YAG both systems, HSRL 532nm
VIL 1064nm
LASER ENERGY/PULSE: HSRL 50 uJ, VIL 400 mJ
PULSE REPETITION RATE: HSRL 4 kHz, VIL 100 Hz
RECEIVER SIZE AND CONFIGURATION: both systems, 0.5 m diameter, Newtonian
DETECTORS USED: HSRL gieger-mode APD and PMTs, VIL silicon APD
SIGNAL PROCESSING: online correction for r^2 and energy with a
variety of sophisicated realtime display options, extensive
off-line processing
ANALOG-T0-DIGITAL CONVERTER: HSRL photon counting, VIL 12 bits-10
mHz.
COMPUTER: HSRL DEC-alpha with i960 VME based front-end.
VIL SGI 4400 with i960 VME based front-end.
PLATFORM (if applicable):
PUBLICATIONS (5 recent and/or significant): See
web site for
current listing.
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