User:Davandron/SBAS

From Wikipedia, the free encyclopedia

A Satellite Based Augmentation System (SBAS) is a system that supports wide-area or regional augmentation of a Global Navigation Satellite System (GNSS), such as the Global Positioning System (GPS), through the use of a satellite-broadcast message. This augmentation seeks to improve on one or more attributes of the GNSS, such as its accuracy, integrity, or availability.

Such systems are commonly composed of multiple ground stations, which take measurements concerning the GNSS, and one or more satellites, which broadcast the information to the receivers. While SBAS designs and implementations may vary widely, with SBAS being a general term referring to any such satellite-based augmentation system, under the ICAO a SBAS must transmit a specific message format and frequency that matches the design of the United States' Wide Area Augmentation System.^{[citation needed]}

[edit] Various Implementations

For details on how various SBAS are implemented, please see the following articles:

• The Wide Area Augmentation System (WAAS), operated by the United States Department of Defense.
• The European Geostationary Navigation Overlay Service (EGNOS), operated by the European Space Agency's.
• The Multi-Functional Transport Satellite (MFSAT) system, operated by Japan and Australia.
• The StarFire navigation system, operated by John Deere.
• The Quasi-Zenith Satellite System (QZSS), proposed by Japan.
• The GPS and GEO Augmented Navigation (GAGAN) system, proposed by India.

[edit] Footnotes and Sources

{{expansion}} [[Category:GPS]]