GNSSkonstellatsioonid
GNSSkonstellatsioonid, or Global Navigation Satellite Systems, are satellite-based navigation systems that provide location and time information to users worldwide. These systems consist of a constellation of satellites orbiting the Earth, along with ground control stations and user receivers. The primary GNSS systems in operation are the United States' Global Positioning System (GPS), Russia's GLONASS, the European Union's Galileo, and China's BeiDou Navigation Satellite System (BDS). Each system has its own unique characteristics, such as the number of satellites, orbital configuration, and signal structure. GNSSkonstellatsioonid are used in a wide range of applications, including transportation, surveying, mapping, and scientific research. They offer global coverage, high accuracy, and continuous availability, making them essential tools for modern navigation and positioning. The integration of multiple GNSS systems, known as GNSS augmentation, further enhances the performance and reliability of navigation services.