Ground and Satellite remote sensing; aerosols, clouds, precipitation, associated meteorology; atmospheric RaDAR, LiDAR signal processing and data analysis; In-situ atmospheric measurements; Instrument design, development, handling and maintenance; Software development ; Handling the tools like ArcGIS, QGIS, Origin, HDFView, SmartDraw etc.; Digital signal and image processing; Electronics & communication engineering; radio frequency (RF) and microwave engineering.