Which of these statements is true of Primary radar?
A) Can calculate ground speed
B) It receives information from the Aircraft's transponder
C) Has a continually spinning antenna located on the ground
D) Greatly enhances a controller's situational awareness compared to Secondary Radar
E) Is a stronger signal than secondary radar

Question

Quizplus · Accepted Answer

Primary radar systems have a stationary or rotating antenna located on the ground, which emits radio signals that are reflected back by aircraft in its path. The location of the aircraft can be determined by analyzing the time and frequency of the reflected waves, but primary radar does not have the ability to calculate ground speed or receive information from an aircraft's transponder. Secondary radar, on the other hand, requires an aircraft to have an active transponder in order to receive information such as aircraft identification, altitude, and ground speed. Therefore, statement C is the only true statement about primary radar.

Which of These Statements Is True of Primary Radar