Global Navigation Satellite System

In the context of aerospace engineering, the Global Navigation Satellite System (GNSS) refers to a constellation of satellites providing signals from space that transmit positioning and timing data to GNSS receivers. The receivers then use this data to determine location. By definition, GNSS provides global coverage. Examples of GNSS include the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), the European Union's Galileo system, and China's BeiDou system. The satellites orbit the earth at high altitudes, allowing signals to be received even in remote locations. GNSS is critical in aerospace engineering for navigation and precise positioning, and is also used in a wide range of other applications, including aviation, maritime, road and rail transport, agriculture, surveying and mapping, and scientific research.
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