A GPS antenna is a device that receives signals from satellites in the Global Positioning System (GPS). It helps determine the precise location of a person or object by capturing these signals and sending them to a GPS receiver. The antenna is crucial for accurate positioning, navigation, and timing applications. GPS antennas come in various types, including active and passive models. Active antennas amplify the received signals, while passive antennas do not. They are commonly used in vehicles, smartphones, and other devices that require location tracking, making them essential for navigation and mapping services.