What is the primary function of the Global Positioning System?

The primary function of the Global Positioning System (GPS) is to provide accurate navigation data. GPS works by utilizing a network of satellites that send signals to GPS receivers on the ground or in aircraft. By determining the time it takes for the signals to reach the receiver from multiple satellites, the system can calculate the precise location (latitude, longitude, and altitude) of the receiver.

This functionality is crucial for navigation in both aviation and various other fields, as it allows pilots to pinpoint their location, follow predetermined flight paths, and improve situational awareness during their journeys. The information provided by GPS can be integrated with other avionics systems, enhancing overall navigation capabilities and safety.

Other options like monitoring weather conditions, facilitating communication between pilots, and enhancing fuel efficiency are not functions of GPS. While GPS can indirectly support functions related to these topics—like helping pilots avoid bad weather by providing precise location data—its core purpose is solely focused on navigation.