What system do Air Traffic Control secondary surveillance radar interrogate?

What system do Air Traffic Control secondary surveillance radar interrogate?

• A. Transponders
• B. Altimeters
• C. Communication Radios
• D. Flight Data Recorders

Answer: (A)

Secondary surveillance radar (SSR) systems utilize transponders to enhance the identification and tracking of aircraft. When an SSR sends an interrogation signal, the onboard transponder responds with specific information, such as the aircraft's unique identifier (a squawk code) and altitude. This capability allows air traffic controllers to obtain critical data about the aircraft's position and trajectory, improving situational awareness. Transponders fulfill a vital function in modern aviation by not only providing identification but also by increasing the safety and efficiency of air traffic management. They operate on specific frequencies designed for SSR communication, which distinguishes them from other systems such as altimeters, communication radios, or flight data recorders. While altimeters provide altitude data, they do not directly interact with radar systems. Communication radios facilitate voice communication, and flight data recorders capture flight information for post-incident analysis. Therefore, the correct understanding of SSR functionality emphasizes its reliance on transponders for effective air traffic surveillance and management.

Secondary surveillance radar (SSR) systems utilize transponders to enhance the identification and tracking of aircraft. When an SSR sends an interrogation signal, the onboard transponder responds with specific information, such as the aircraft's unique identifier (a squawk code) and altitude. This capability allows air traffic controllers to obtain critical data about the aircraft's position and trajectory, improving situational awareness.

Transponders fulfill a vital function in modern aviation by not only providing identification but also by increasing the safety and efficiency of air traffic management. They operate on specific frequencies designed for SSR communication, which distinguishes them from other systems such as altimeters, communication radios, or flight data recorders.

While altimeters provide altitude data, they do not directly interact with radar systems. Communication radios facilitate voice communication, and flight data recorders capture flight information for post-incident analysis. Therefore, the correct understanding of SSR functionality emphasizes its reliance on transponders for effective air traffic surveillance and management.