Anti-fog radar for aircrafts

Delays in flights due to fog are common in winters in Delhi. To counter this problem, the Airports Authority of India (AAI) ha begun installing a radar system that would allow aircraft movement in dense fog. Once the radar system is installed, transponders on top of all vehicles moving in the technical area will beam their location to the air traffic control (ATC), ensuring a safe passaeg for the aircraft.
The existsng landing system is restricted to a runway visibility range of up to 200 metres. With the radar in place, landings and take-offs will be possible even if visibility falls to 50 metres.