Definition of Secondary Radar
Secondary radar, also known as secondary surveillance radar (SSR), is a type of radar system that is used to communicate with aircraft and gather information about their flight parameters such as altitude, speed, heading, and registration.
The secondary radar sends out a signal to the compatible aircraft, which then responds with its own unique signal that contains information about the aircraft. This information is then displayed on the radar operator’s screen, allowing them to identify and track the aircraft.
Unlike primary radar systems, which only detect the presence of an object, secondary radar provides additional information such as altitude and registration, making it a valuable tool in air traffic control and aviation safety.
Secondary radar is also used in air defense systems to identify friendly and hostile aircraft and distinguish between civilian and military aircraft.
In summary, secondary radar is a vital component in aviation safety and air traffic control that provides detailed information about aircraft flight parameters to radar operators and defense systems.
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