What is Lidar Mapping?

Lidar, short for Light Detection and Ranging, employs pulsed laser light for remote sensing to measure distances to the Earth's surface. This method, combined with other data from the airborne system, provides precise three-dimensional details about the Earth's terrain and surface features.

A lidar system typically includes a laser, a scanner, and a specialized GPS receiver. Aircraft, like airplanes and helicopters, are commonly used to collect lidar data across large areas. There are two main types: topographic lidar, which uses near-infrared lasers for land mapping, and bathymetric lidar, employing green light to measure seafloor and riverbed elevations by penetrating water.