The following 11 minute video explains how lidar is being used as part of a new system to assist aircraft with avoiding crashes while on the ground.
The recently patented Aerial, Landing and Takeoff Aircraft Crash Avoidance System (ALTACAS) offers an update to current TCAS systems. It is designed to detect and monitor other aircraft, drones and vehicles at or near ground level in airports.
The video highlights the combination of light detection and ranging (LIDAR) radar technology and GPS tracking used in the ALTACAS. Neither technology interferes with radio signals from air traffic controllers.