Global Navigation Satellite Systems
Global Navigation Satellite Systems (GNSS) are a constellation of satellites that provide positioning, navigation, and timing (PNT) services to users on the ground, in the air, and in space. These systems use a network of satellites in orbit around the Earth, ground control stations, and user receivers to provide accurate and reliable PNT information. The most well-known GNSS systems are the United States' GPS, Russia's GLONASS, China's BeiDou, and the European Union's Galileo. GNSS technology has revolutionized the way we navigate and has become an essential tool for a wide range of applications, including aviation, maritime, land surveying, and emergency response.
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