Glossary of satellite navigation terms
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AVIGA |
Accuracy, Visibility, Integrity, Geometry & Availability (of Satellite Navigation Systems) |
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DOP |
Dilution Of Precision |
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EGNOS |
European Geostationary Navigation Overlay Service |
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GALILEA |
Galileo Local Elements Augmentation |
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Galileo |
Galileo will be Europe's own global navigation satellite system, providing highly accurate, guaranteed global positioning services under civilian control. It will be interoperable with GPS and GLONASS, the other two global satellite navigation systes. Further information is available from the European GNSS Supervisory Authority (GSA), the European Space Agency (ESA) and the European Union (EU). |
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GalTeC |
Galileo Technology Center |
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GBAS |
Ground Based Augmentation System |
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GLONASS |
GLObal NAvigation Satellite System - the Russian counterpart to the US GPS system |
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GNSS |
Global Navigation Satellite System |
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GPS |
Global Positioning System |
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IGM |
Independent GBAS Monitor |
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Integrity |
Integrity can be defined as a measure of the trust that can be placed in the correctness of the information supplied by the system. Integrity includes the ability of the navigation system to provide users with timely and valid warnings (alerts) when the system must not be used for the intended operation. The integrity performance is usually specified by means of three parameters:
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IR |
Integrity Risk |
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MSAS |
Multi-functional Satellite Augmentation System, the Japanese SBAS system |
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RAIM |
Receiver Autonomous Integrity Monitoring |
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SBAS |
Space Based Augmentation System |
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SIS |
Signal In Space |
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WAAS |
Wide Area Augmentation System, the US SBAS system |