Global Navigation Satellite System (GNSS)

The Global Navigation Satellite System (GNSS) is a satellite system that is used to pinpoint the geographic location of a user's receiver anywhere in the world. In the maritime context, GNSS is an essential tool for navigation and positioning, providing accurate, reliable, and continuous worldwide coverage. It is used for a wide range of applications, including navigation, positioning, timing, and mapping. The system works by transmitting signals from satellites to a receiver on the ship. The receiver then uses the time delay of the received signals to calculate the distance to each satellite, which is then used to determine the ship's position. There are several types of GNSS, including the Global Positioning System (GPS), GLONASS, Galileo, and BeiDou. Each system has its own set of satellites and ground control stations. GNSS has revolutionized maritime navigation, making it safer and more efficient. It has also enabled new applications in areas such as maritime surveillance, search and rescue operations, and environmental monitoring.
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