Lidar

laser altimeterLight Detection and Ranging3D laser scanninglaser radarLADARlaser altimetryLight Detection and Ranging (LIDAR)differential absorption LIDARlaserlaser ranging
Lidar (, called LIDAR, LiDAR, and LADAR) is a surveying method that measures distance to a target by illuminating the target with laser light and measuring the reflected light with a sensor.wikipedia
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Laser

laserslaser beamlaser light
Lidar (, called LIDAR, LiDAR, and LADAR) is a surveying method that measures distance to a target by illuminating the target with laser light and measuring the reflected light with a sensor.
Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar.

Laser scanning

laser scannerlaser scanslaser scan
Lidar sometimes is called 3D laser scanning, a special combination of a 3D scanning and laser scanning.
Within the field of 3D object scanning, laser scanning (also known as lidar) combines controlled steering of laser beams with a laser rangefinder.

Radar

radar stationradarsradar system
The name lidar, now used as an acronym of light detection and ranging (sometimes, light imaging, detection, and ranging), was originally a portmanteau of light and radar.
One example is LIDAR, which uses predominantly infrared light from lasers rather than radio waves.

Rangefinder

rangingrange finderrangefinders
From the early colidar systems all laser rangefinders, laser altimeters and lidar units are derived.
Active rangefinding methods include laser, lidar, radar, sonar and ultrasonic rangefinding.

Geomorphology

geomorphologicalgeomorphologistgeomorphic
Lidar is commonly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry.
Terrain measurement techniques are vital to quantitatively describe the form of the Earth's surface, and include differential GPS, remotely sensed digital terrain models and laser scanning, to quantify, study, and to generate illustrations and maps.

Atmospheric physics

atmospheric physicistatmosphericatmosphere physics
Lidar is commonly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry.
radar, lidar, and SODAR are examples of active remote sensing techniques used in atmospheric physics where the time delay between emission and return is measured, establishing the location, height, speed and direction of an object.

National Center for Atmospheric Research

NCARNational Centre for Atmospheric ResearchComputational and Information Systems Laboratory
Lidar's first applications came in meteorology, where the National Center for Atmospheric Research used it to measure clouds and pollution.

Surveying

surveyorsurveyland surveyor
Lidar (, called LIDAR, LiDAR, and LADAR) is a surveying method that measures distance to a target by illuminating the target with laser light and measuring the reflected light with a sensor.
Prominent new technologies include three-dimensional (3D) scanning and use of lidar for topographical surveys.

Archaeology

archaeologistarchaeologicalarchaeologists
Lidar is commonly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry.
Lidar (Light Detection and Ranging)

Collision avoidance system

Pre-Collision SystemPrecrash systemPre-Safe
For example, lidar altimeters look down, an atmospheric lidar looks up, and lidar-based collision avoidance systems are side-looking.
It uses radar (all-weather) and sometimes laser (LIDAR) and camera (employing image recognition) to detect an imminent crash.

Laser guidance

laser-guidedSemi-active laser homingsemi-active laser
Lidar is commonly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry.
Laser guidance is used by military to guide a missile or other projectile or vehicle to a target by means of a laser beam (Lidar), e.g. beam riding guidance or semi-active radar homing (SARH).

Velodyne LiDAR

Velodyne
Examples of obstacle detection and avoidance products that leverage lidar sensors are the Autonomous Solution, Inc. Forecast 3D Laser System and Velodyne HDL-64E.
Velodyne Lidar is a Silicon Valley-based lidar technology company spun off from Velodyne Acoustics.

Quanergy

Several companies are working on developing commercial solid-state lidar units, including the company Quanergy which is designing a 905 nm solid state device, although they appear to be having some issues in development.
Quanergy LiDAR is a privately-held Silicon Valley-based technology company providing LiDAR sensors and smart sensing solutions.

Mahendraparvata

In June 2013, the rediscovery of the city of Mahendraparvata was announced.
The city was uncovered by an archaeological expedition led by Jean-Baptiste Chevance and Damian Evans in 2012 with the aid of airborne laser scanning technology called LIDAR.

Bathymetry

bathymetricisobathbathymetric survey
Airborne topographic mapping lidars generally use 1064 nm diode pumped YAG lasers, while bathymetric (underwater depth research) systems generally use 532 nm frequency doubled diode pumped YAG lasers because 532 nm penetrates water with much less attenuation than does 1064 nm.
The data used to make bathymetric maps today typically comes from an echosounder (sonar) mounted beneath or over the side of a boat, "pinging" a beam of sound downward at the seafloor or from remote sensing LIDAR or LADAR systems.

La Ciudad Blanca

White CityCiudad BlancaLost City of the Monkey God: A True Story
In 2012, lidar was used to search for the legendary city of La Ciudad Blanca or "City of the Monkey God" in the La Mosquitia region of the Honduran jungle.
In May 2012, press releases issued by a team led by documentary film maker Steve Elkins and by the Honduran government about remote sensing exploration using LiDAR renewed interest in the legend.

Photogrammetry

photogrammetricstereophotogrammetryPhotomapping
This is currently the most detailed and accurate method of creating digital elevation models, replacing photogrammetry.
From its beginning with the stereoplotters used to plot contour lines on topographic maps, it now has a very wide range of uses such as sonar, radar, and lidar.

Optical heterodyne detection

Synthetic array heterodyne detectionheterodyneoptical heterodynes
Coherent systems generally use optical heterodyne detection.
This technique became widely applicable to topographical and velocity-sensitive imaging with the invention in the 1990s of synthetic array heterodyne detection.

Arlen F. Chase

Arlen ChaseArlenArlen F Chase
Another example is work at Caracol by Arlen Chase and his wife Diane Zaino Chase.
Previously, he served as the Departmental Chair at the University of Central Florida, noted for his work on exploring traces of Mayan civilization using lidar.

Edward Hutchinson Synge

EH Synge
The essential concept of lidar was originated by EH Synge in 1930, who envisaged the use of powerful searchlights to probe the atmosphere.
Today this is known as Lidar, and uses pulsed lasers.

Geomatics

Geomatics EngineeringGeomaticspatial science
Lidar is commonly used to make high-resolution maps, with applications in geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry.

Meteorology

meteorologicalmeteorologistmeteorologists
Indeed, lidar has since been used extensively for atmospheric research and meteorology.
The common types of remote sensing are Radar, Lidar, and satellites (or photogrammetry).

LIDAR traffic enforcement

LIDAR detectorLIDAR speed gunLIDAR
Lidar speed guns are used by the police to measure the speed of vehicles for speed limit enforcement purposes.
Lidar has a wide range of applications; one use is in traffic enforcement and in particular speed limit enforcement, has been gradually replacing radar since 2000.

Self-driving car

autonomous cardriverless carself-driving cars
The technology is also used in control and navigation for some autonomous cars.
Self-driving cars combine a variety of sensors to perceive their surroundings, such as radar, lidar, sonar, GPS, odometry and inertial measurement units.

National lidar dataset

There are a wide variety of applications for lidar, in addition to the applications listed below, as it is often mentioned in National lidar dataset programs.
A national lidar dataset refers to a high-resolution lidar dataset comprising most—and ideally all—of a nation’s terrain.