https://en.m.wikipedia.org/wiki/Lidar
Lidar (
/ˈlaɪdɑːr/, also
LIDAR,
LiDAR or
LADAR, an acronym of "light detection and ranging"
[1] or "laser imaging, detection, and ranging"
[2]) is a method for determining
ranges by targeting an object or a surface with a
laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed direction (e.g., vertical) or it may scan multiple directions, in which case it is known as
lidar scanning or
3D laser scanning, a special combination of
3-D scanning and
laser scanning.
[3] Lidar has terrestrial, airborne, and mobile applications.
[4][5
Lidar is commonly used to make high-resolution maps, with applications in
surveying,
geodesy,
geomatics,
archaeology,
geography,
geology,
geomorphology,
seismology,
forestry,
atmospheric physics,
[6] laser guidance, airborne laser swathe mapping (ALSM), and
laser altimetry. It is used to make digital
3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for
autonomous cars[7] and for the
helicopter Ingenuity on its record-setting flights over the terrain of
Mars.
[8]
The evolution of quantum technology has given rise to the emergence of Quantum LiDAR, demonstrating higher efficiency and sensitivity when compared to conventional LiDAR systems.
[9]