GNSS stands for Global Navigation Satellite System, a collective term for satellite-based systems that provide global positioning, navigation, and timing information. Unlike GPS, which refers specifically to the United States' system, GNSS encompasses all similar systems worldwide, including Russia's GLONASS, Europe's Galileo, and China's BeiDou. These networks of satellites work together to deliver accurate location data to devices such as smartphones, vehicles, and navigation equipment, supporting a wide range of applications from mapping to emergency response.