There is no absolute good or bad of these two technologies, depending on different usage scenarios. No one can replace anyone at this stage. At the same time, he also said that there is a consensus in the industry that smart driving in the future may not be a single radar, but a green laser pointer solution that combines different technologies such as lidar, millimeter wave, and camera. The ultra-long-range lidar responds to rain and fog weather problems.
It is worth noting that the lidar is easily affected by the weather, and its performance is poor under rain, snow, and fog conditions, especially on snowy days. When using the lidar to sense the surrounding environment or navigate, there will be cameras that cannot recognize lane lines and cannot draw Conditions such as effective environmental maps make it difficult to ensure driving safety. In this regard, Lidar does have certain restrictions on the environment, especially in a foggy environment, which requires a longer wavelength laser, which will have a stronger penetrating power and thus measure a longer distance , Greatly reducing the impact of dense fog.
He also revealed that some manufacturers are studying the use of longer-wavelength lasers, and some companies are currently using 1550nm infrared lasers for ranging. The rise of unmanned driving has been overwhelming. As an integral part of unmanned driving, lidar manufacturers hope that their technical routes will become the mainstream of future green laser pointers.