Which radar type provides more detailed information about an aircraft's identity?

Secondary radar is the type that provides more detailed information about an aircraft's identity. This system operates by sending out a signal to the aircraft, which then responds by transmitting its unique identification information and other data, such as altitude. This interaction allows air traffic controllers to not only identify individual aircraft but also track their flight data, including speed and direction.

In contrast, primary radar works by sending out a signal that reflects off the aircraft and returns to the radar system, but it does not provide any identifying information about the aircraft itself. Ground radar is typically used for monitoring aircraft movements on the ground rather than in the air, and weather radar is designed to detect and analyze weather patterns, not to track aircraft. Therefore, secondary radar stands out as the most effective method for obtaining comprehensive and specific information about an aircraft's identity and operational status.