“Light Detection and Ranging,” or LiDAR, is an acronym for “Light Detection and Ranging.” The time it takes for light to bounce off objects is measured by LiDAR sensors. The distance between the object and the sensor is calculated, and an environment map is created. Time-of-flight or legacy Only depth and reflectivity are measured by LiDAR. FMCW LiDAR measures velocity, depth reflectivity, and inertial motion by sending continuous beams of light to objects in the surroundings.
Without losing range, the 4D LiDAR-on-chip measures distance as well as instant velocity of every point on objects. At this range, FMCW technology uses a fraction of the optical power required.