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An instrument in which a laser generates intense infrared pulses in beam widths as small as 30 seconds of arc; beam reflections and scattering effects of clouds, smog layers, and some atmospheric discontinuities are measured by radar techniques; it can also be used for tracking weather balloons, smoke puffs, and rocket trails. Derived from laser infrared radar.


(LIght Detection And Ranging) An optical technology that senses the shape, motion and makeup of objects in the environment. It is used in a wide variety of disciplines, including airborne mapping, measuring atmospheric conditions and self-driving cars. LIDAR works by pulsing laser signals using all light ranges (ultraviolet, visible, infrared) and amplifying the light that is scattered back through an optical telescope and photomultiplier tube. Sometimes called "laser radar," LIDAR technically uses light waves and not "radio" waves (see radar). See self-driving car.

LIDAR in a Self-Driving Car
LIDAR can be used to sense objects in front, back and on the sides of a vehicle for all possible detection purposes. (Image courtesy of Phantom Intelligence,

Temi Moves on Its Own
The LIDAR module (red arrow) on the Temi personal robot is used to detect objects as it moves around the house. (Image courtesy of Temi,
References in periodicals archive ?
El ultimo caso de estudio de este trabajo, es un ejemplo de la aplicacion de la tecnologia lidar terrestre a una estructura arqueologica relativamente pequena, de mucha importancia y en la que no es permitida su manipulacion fisica, como lo es una esfera precolombina.
LiDAR aerial scans for Aberystwyth, combined with Environment Agency Flood Alert areas and aerial photography maps, were used to create a dramatic image of the threat from flooding.
He says that some LiDAR systems on the market today--admittedly systems that are being produced in prototype, not production, volumes--can be as high as $70,000.
The new lidar has a vertical spatial resolution of 10 meters, making it well-suited for measuring small-scale phenomena such as wind shear and aircraft-generated wake turbulence.
O-Net, one of the world's largest companies for Erbium-Doped Fiber Amplifiers ("EDFA"), and supplier of 980nm pump lasers worldwide, has fully integrated capability for 1550nm Pulsed Laser for LiDAR, from system design, laser chip manufacturing, subcomponent manufacture and volume assembly in its state-of-the-art manufacturing facilities, scalable for meeting the demands of the dynamic and fast growing market.
This paper is a summary of a PhD thesis [1] (and the corresponding paper [4]), which proposed an algorithm for classification of vegetation points within LiDAR data.
The company,which also goes by the name Lvl5,  is working on supporting a fully-functioning self-driving system without LIDAR.
The RC car with LIDAR mounted on the top was asked to travel from backside of the five obstacles to front side, without hitting any obstacles.
Lidar will, because of its 'post spacing', a term that describes the distance between positions that can accurately be shown in a dataset.
Most lidar systems use optical components such as lasers, lenses and external receivers.
It's humbling to see the lidar data and realize how much was previously missed in ground surveys," says Mitch Hendrickson of the University of Illinois at Chicago.
LiDAR (light detection and ranging) sensing is a technology that measures distance by illuminating a target with a laser light.