What is the primary function of Mode S radar?

The primary function of Mode S radar is to focus on individual aircraft with detailed data. Mode S, or Selective Mode S, employs a unique identification system that allows air traffic controllers to receive comprehensive information from specific aircraft. Unlike traditional radar systems that may provide basic positional data, Mode S radar enables the transmission and reception of additional data such as aircraft identification, altitude, and other relevant flight parameters. This detailed data facilitates more efficient and precise air traffic management, allowing controllers to maintain awareness of the specific details of each aircraft they are monitoring, which is crucial for ensuring safe and effective air traffic control operations.

The ability to focus on individual aircraft means that controllers can efficiently manage air traffic and enhance safety by minimizing the likelihood of misidentification or confusion between multiple aircraft. This degree of clarity and individual tracking is a significant advancement over older radar technologies.