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What advantages does a secondary radar provide?
The purpose of SSR is to improve the ability to detect and identify aircraft while automatically providing the Flight Level (pressure altitude) of an aircraft.
What is fruiting in radar?
Another phenomenon that may produce false indication is FRUIT (False Replies Unsynchronised In Time or False Replies Unsynchronised to Interrogator Transmissions). This happens when the radar receives a reply from a transponder that has been interrogated by another radar.
Which of the following is false with respect to secondary radar?
Which of the following is false with respect to secondary radar? Explanation: The reflected or backscattered radio energy that reaches the radar antenna is called an echo. In secondary radar it is called a reply since the transponder replies for the interrogation signal.
How is secondary surveillance radar used in air traffic control?
Secondary surveillance radar. Secondary surveillance radar ( SSR) is a radar system used in air traffic control (ATC), that not only detects and measures the position of aircraft, i.e. bearing and distance, but also requests additional information from the aircraft itself such as its identity and altitude.
What’s the difference between a primary and secondary radar?
A radar or ‘primary’ radar (to distinguish it from a secondary surveillance radar (SSR), which follows) is a radio-detection device, the principles of which were proven in the late 1930s.
How tall is the monopulse secondary surveillance radar?
Monopulse secondary surveillance radar Standard SSR Monopulse SSR Mode S Replies per scan 20–30 4–8 1 Range accuracy 230 m rms 13 m rms 7 m rms Bearing accuracy 0.08° rms 0.04° rms 0.04° rms Height resolution 100 ft (30 m) 100 ft 25 ft (7.6 m)
What’s the range of an ATC Surveillance Radar?
An ATC surveillance radar will typically detect airliners from 20 to 150 naut. mile maximum range, the absolute range being determined by the power transmitted and the application for which the radar is employed.