Apple & Cornell offer alternatives to lidar for autonomous cars
Lidar is a technology similar to radar that uses light instead of radio waves to gather information about the surrounding environment. Every company in the world that is working on autonomous cars — except Tesla — uses lidar as part of the sensor package that feeds data to the car’s self-driving computer.
https://cleantechnica.com/2019/04/24/apple-cornell-offer-alternatives-to-lidar-for-autonomous-cars/