SBASvõrgud

SBASvõrgud, or Satellite-Based Augmentation Systems, are ground-based systems that enhance the accuracy, integrity, and availability of Global Navigation Satellite Systems (GNSS) signals. These systems are designed to correct errors in GNSS signals, which can be caused by factors such as atmospheric conditions, satellite clock errors, and orbital inaccuracies. SBASvõrgud provide differential corrections to GNSS receivers, allowing them to achieve higher precision in positioning and timing applications.

The most well-known SBASvõrgud is the Wide Area Augmentation System (WAAS), operated by the Federal Aviation Administration (FAA) in the United States. Other notable systems include the European Geostationary Navigation Overlay Service (EGNOS), the Multi-functional Satellite Augmentation System (MSAS) in Japan, and the GPS Aided Geo Augmented Navigation (GAGAN) system in India. These systems use a network of ground stations to monitor GNSS signals and transmit correction data to users via geostationary satellites.

SBASvõrgud are crucial for safety-critical applications such as aviation, maritime navigation, and precision agriculture. They ensure that GNSS receivers can provide reliable and accurate positioning information, even in challenging environments. The integration of SBASvõrgud with GNSS receivers has significantly improved the performance and reliability of navigation systems, making them indispensable for modern transportation and logistics.