A GNSS receiver is a device that receives signals from Global Navigation Satellite Systems (GNSS) to determine its precise location on Earth. These systems include GPS, GLONASS, Galileo, and BeiDou. By analyzing signals from multiple satellites, the receiver calculates its latitude, longitude, and altitude. GNSS receivers are widely used in various applications, such as navigation for vehicles, smartphones, and outdoor activities like hiking. They also play a crucial role in geolocation services, mapping, and surveying, providing accurate positioning data that enhances safety and efficiency in many fields.