Which segment of GPS monitors signals from satellites?

The control segment of GPS is responsible for monitoring the signals transmitted by the satellites. This segment comprises ground-based facilities that track the satellite signals, assess their performance, and manage satellite operations. Control stations continuously receive data from satellites to ensure their accuracy, update satellite ephemeris, and provide necessary corrections.

The satellites themselves make up the space segment, which is composed of the constellation of satellites orbiting the Earth. The user segment consists of GPS receivers that users employ to access the positioning data provided by the satellites. The term transmission segment is not a standard component of GPS terminology, as signals are transmitted directly from the space segment to the user segment without a distinct segment for transmission.

Understanding the function of the control segment is essential for grasping how GPS systems maintain reliable and accurate navigation, as this segment plays a crucial role in tracking satellite status and correcting any discrepancies in their signals.