Global Navigation Satellite System (GNSS) refers to a network of satellites that provide geolocation and time information to a GNSS receiver anywhere on Earth. This system includes various satellite constellations, such as the Global Positioning System (GPS), GLONASS, Galileo, and BeiDou, which work together to determine precise locations. GNSS technology is widely used in various applications, including navigation for vehicles, aircraft, and ships, as well as in smartphones and other devices. It enables accurate positioning, which is essential for activities like mapping, surveying, and even agriculture, enhancing efficiency and safety in many fields.