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A Short Introduction to Automotive Lidar Technology
A guide to the operating principles, techniques and technology in lidar systems for self driving cars.
Ouster, for example, has actually adopted 850 nm for its lidar technology despite high solar photon flux due to better visibility in damp conditions, improved source and detector performance, with patented approaches to rejecting environmental interference. Much like how sonar echo-location or pulsed doppler radar works, ToF sensing using lidar involves emitting laser bursts and measuring the time taken to detect the reflected signal. A mechanical lidar has an infrared laser that is mounted on a brushless DC motor that rotates the sensor thus providing it a 360° field of view (FOV) in the horizontal direction and eliminating any blindspots.
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