Advantages and Challenges of LiDAR

LiDAR is an active sensor. The most common ToF (Time of Flight) ranging method is to determine the distance and position by actively emitting laser beams and measuring the time it takes for them to reflect back and forth from surrounding objects. LiDAR can obtain the three-dimensional positioning information of these points by emitting millions of laser points per second to the outside world, clearly presenting the details of pedestrians, zebra crossings, vehicles, trees and other objects, and achieving image-level resolution. Moreover, the denser the laser points, the higher the resolution, and the more complete and clear the real world can be reconstructed. Due to its "active light-emitting" characteristics, LiDAR is very little affected by changes in the surrounding light, and can "accurately see" even in a dark night environment.