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Recently LIDARs were employed with Q-switched DPSS lasers for atmospheric investigations. Micro pulse LIDAR [MPL] is a version of DPSS laser based new generation LIDAR technology. In recent years, MPLs have become increasingly popular owing to their unattended operation and more suitable for long-term measurement of atmospheric parameters . The MPL uses high repetition rate, low pulse energy lasers for atmospheric investigations .
The MPL technology was successful globally and have been used in the studies of high altitude clouds , atmospheric aerosol , slow air motion [ 8], aerosol extinction , global monitoring of aerosols and clouds , boundary layer aerosol , internal boundary layer [12, 13], horizontal visibility , low humidity layer , multilayer clouds , aerosol studies in traffic  and also in airborne studies .
In India, recently a portable LIDAR [19, 20] was successfully demonstrated at National Atmospheric Research Laboratory (NARL) for atmospheric studies. The NARL is a Department of Space (DOS) unit operates several LIDAR instruments for atmospheric studies [21, 22, 23, and 24]. The portable LIDAR uses micro pulse operation and was developed under boundary layer LIDAR (BLL) project. The BLL was a popular LIDAR technology in India caused by “its” low-cost design and numerous applications in the scientific field. The BLL was constructed with several innovative features and was filed for intellectual property rights under ISRO in the year 2009 .
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