Those LIDARs are a spinning array of lasers measuring time of flight for each laser as it spins. Each of ~64 lasers forms one scan line all around itself, and b

Those LIDARs are a spinning array of lasers measuring time of flight for each laser as it spins. Each of ~64 lasers forms one scan line all around itself, and by taking all the scan lines together, they form a rough picture of the 3D structure of the surroundings. You can filter out aberrant inputs in software.