Mie LIDAR: Instrument Description and Applications

14-2-4.jpg
14-2-4.jpg

Mie LIDAR: Instrument Description and Applications

9.95

Author(s): M.K. Jindal; A.K. Razdan; Vikas Sagar; S. Veerabuthiran
No pages: 7
Year: 2011
Article ID: 14-2-4
Keywords: lasers, lidar, surveillance and target acquisition
Format: Electronic (PDF)

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Abstract: A Mie LIDAR system has been designed and developed at the Laser Science and Technology Centre (LASTEC), Delhi by using a minimal number of commercially available off-the-shelf components. A Nd:YAG laser operating at 1064 nm with variable pulse energies between 25–400 mJ, 10 Hz repetition rate and 7 ns pulse duration is used as a transmitter and a Cassegrain telescope with a 200 mm diameter mirror as a receiver. A silicon avalanche photodiode module with built-in preamplifier is used as a detector. A data acquisition system has been designed using a data acquisition card (National Instruments) and a BNC connector terminal block. Graphical user-friendly LabVIEW-based software has been developed to configure the hardware and acquire the backscattered signal. This software also controls the transmitter to fire the laser pulses with the given sequences. The experimental setup is installed on a movable tripod platform for conducting field experiments. Experiments have been conducted using this set up and preliminary results on measurements of aerosols, clouds, visibility and depolarization are discussed in this paper.