Global Positioning Systems (GPS) are satellite-based navigation systems that allow users to determine their exact location anywhere on Earth. GPS works by using a network of satellites that send signals to GPS receivers, which calculate the user's position based on the time it takes for the signals to arrive. GPS technology is widely used in various applications, including navigation for vehicles, smartphones, and aviation. It also plays a crucial role in geocaching, mapping, and emergency services, helping people find their way and improving safety in many situations.