What is LIDAR (Light Detection and Ranging)?

Lidar sometimes is called 3-D laser scanning. LADAR is a strategy for deciding ranges by focusing an object with a laser and estimating the ideal opportunity for the reflected light to get back to the receiver. A lidar instrument comprises a laser, a scanner, and a specific GPS receiver. There are two sorts of lidar: topographic and bathymetric. Topographic lidar commonly utilizes a near-infrared laser to map the land, while bathymetric lidar utilizes water-penetrating green light to likewise quantify seafloor and riverbed heights.