What primary method of radar identification is used when an aircraft reports over a known point on the radar map?

The correct answer is identified through the method involving aircraft reporting over a known point depicted on the radar map and observing the target. This primary method is essential for ensuring accurate radar identification. When an aircraft reports its position over a fix that is marked on the radar display, it provides a reliable confirmation that aligns the aircraft's radar return with its reported position. This helps the controller verify that the radar target corresponds to the aircraft's position without ambiguity.

Using this method not only increases the confidence in the identification process but also assists in maintaining situational awareness in busy airspace. It allows controllers to effectively coordinate air traffic by ensuring that they are aware of the known locations of aircraft relative to established navigational points. This practice is crucial for safe and efficient air traffic management, especially in environments with multiple aircraft operating simultaneously.

Other identification methods, such as using altitude references or tracking ground speed, may provide additional information but are not as direct or effective in establishing immediate radar identification linked to the aircraft's reported position. Visual confirmations can also be useful, but they are less reliable and less commonly utilized compared to the overlapping data provided by the aircraft's report and the radar display.