Global navigation satellite system (GNSS)

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Global Navigation Satellite System (GNSS) is a satellite-based positioning system that enables autonomous geospatial positioning with global coverage. This system utilizes time signals transmitted from satellites to determine the receiver’s location, including longitude, latitude, and altitude, with an accuracy of a few meters. Small electronic receivers can access GNSS signals to determine their precise location, speed, and time. With increased global coverage, GNSS has become the backbone of many location-based applications, including navigation, surveying, and various scientific and military applications.