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LiDAR (Light Detection and Ranging ) is a remote sensing technology which uses the pulse from a laser to collect measurements . LiDAR works in a similar way to Radar and Sonar but uses light waves from a laser, instead of radio or sound waves .Lidar can be used for distance measurement ,to measure distance in 3d clouds.For lasee scanning of 3D Models,

Lidar Working Principle

  • Emission of a laser pulse
  • Record of the back scattered signal
  • Distance measurement (Time of travel x speed of light)
  • Retrieving plane position and altitude
  • Computation of precise echo position

1. emitting a laser pulse on a surface
2. catching the reflected laser back to the LiDAR pulse source with sensors
3. measuring the time laser travelled
4. calculating the distance from source with the formula β€œDistance = (Speed of light x Time elapsed) / 2

This process is repeated a million times by LiDAR instruments and ends up by producing a complex map of the surveyed area : a 3D point cloud.

Applications of Lidar

  • SLAM
  • 3D Mapping
  • Vehicle & Robot Automation for Self Navigation

List of Student Projects on Lidar

  • Arduino Map generation using LIDAR
  • Obstacle Avoidance
  • SLAM Implementation using LIDAR and Matlab
  • Path planning Robot using Lidar and Image Processing
  • Self Driving Car using LIDAR and Image Processing

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