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What is the lidar? 


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LiDAR, or light detection and ranging, is an optical remote sensing system that uses light to measure the distance to a target. It is widely used in fields such as automotive, robotics, and aerospace for extracting information from the surrounding environment. LiDAR technology works by illuminating the target with a laser beam and then detecting the light components that return to the receiver. This allows LiDAR to provide accurate distance measurements and create 2D or even 3D elevation maps of the terrain. LiDAR systems typically consist of a transmitter, a receiver, and a mechanical mechanism with a mirror to scan the light beam. The technology has applications in recognizing the environment, classifying objects, and enabling accurate and safe landings for robots and manned vehicles.

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The paper does not provide information about lidar. The paper is about the LIDAL (Light Ion Detector for ALTEA) radiation detector designed for the International Space Station.
LIDAR (Light Detection and Ranging) is an optical remote sensing system that measures the distance to a target by shining light on the target.
Proceedings ArticleDOI
Lei Yuan, Winnie N. Ye 
17 Mar 2023
LiDAR, or light detection and ranging, is an active remote sensing system that accurately surveys the surrounding environment. (Answer is in the paper)
The paper does not provide a direct answer to the question "What is LiDAR?"
The paper does not provide a direct definition of LiDAR.

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