ForumIAS announcing GS Foundation Program for UPSC CSE 2025-26 from 19 April. Click Here for more information.
ForumIAS Answer Writing Focus Group (AWFG) for Mains 2024 commencing from 24th June 2024. The Entrance Test for the program will be held on 28th April 2024 at 9 AM. To know more about the program visit: https://forumias.com/blog/awfg2024
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News: National High Speed Rail Corporation Limited is adopting Light Detection and Ranging Survey(LiDAR) technique for conducting ground survey for the proposed Delhi-Varanasi High Speed Rail(HSR) corridor.
Facts:
- LiDAR (Light Detection and Ranging): It is a remote sensing method that uses light in the form of a pulsed laser to measure ranges & variable distances.
- Working: These light pulses combined with other data recorded by the airborne system generate precise, three-dimensional information about the shape of the Earth and its surface characteristics.
- Instrument: LiDAR instrument principally consists of a laser, a scanner, and a specialized GPS receiver. Airplanes and helicopters are the most commonly used platforms for acquiring LiDAR data over broad areas.
- Applications: LiDAR is used for agriculture, hydrology and water management systems, geology-related applications and also in archaeology.
