What does the AN/TPS-75 Aircraft Control and Warning System primarily detect?

The AN/TPS-75 Aircraft Control and Warning System is primarily designed for the detection and tracking of aircraft. It operates as a radar system that provides situational awareness for air defense operations by identifying and tracking both friendly and hostile aerial threats. This capability makes it an essential tool for military forces that need to monitor airspace and manage aerial engagements effectively.

The system is equipped to perform tasks such as target detection, identification, and tracking, which are critical for coordinating air defense systems and ensuring the safety of air operations. Its focus on aerial targets highlights why the choice related to air traffic is the correct answer.

While the other options may pertain to different types of radar systems or technology, they do not align with the primary function of the AN/TPS-75. For example, weather radar systems would focus on meteorological data, ground movement tracking tools are concerned with terrestrial vehicles, and submarine detection typically involves sonar rather than a system like the AN/TPS-75.