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Scanning Elastic LiDAR

Setting up the LiDAR unit on top of the Whale.

Setting up the LiDAR unit on top of the Whale.

The Scanning Elastic LiDAR (MINI) sends a pulse of laser light at 1064nm (or 532 nm) into the atmosphere and records the backscattered return power signal. The MINI is generally used to make quick transects of the atmosphere in order to measure the relative backscatter of particulates approximately 1 micron in size. By doing this, we are able to generate 4-D plots (including time) of the atmosphere, which allows us to track atmospheric constituents as they are transported and dispersed from various sources.

Transmitter  Receiver
TypeNd:YAG laser Big Sky (Quantel)TypeStandard f/10 Schmidt-Cassegrain Telescope
Wavelength1064/532 nmDiameter0.254 m
Pulse Length~10 nsFocal Length2.5 m
Pulse Repetition Length50 HzFilter Bandwidth3.0 nm
Pulse Energy~25 mJ per pulseField of View1.0–4.0 mrad adj.
Beam Divergence~3 mradRange Resolution1.5 m
DetectorIR-enhanced Silicon Avalanche Photo Diode

 

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Last modified on June 25th, 2015
Posted on December 22nd, 2011

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