Glossary

ARAIM: Advanced Receiver Autonomous Integrity Monitoring

ARINC: Aeronautical Radio Incorporated (provides aeronautical standard)

CONOPS: A CONcept of OPerationS is a document describing the operational use of a proposed system

DFMC: Dual Frequency Multi Constellation

EASA: European Aviation Safety Agency

EDG²E: Equipment for Dual Frequency Galileo GPS and EGNOS

EGNOS: European Geostationary Navigation Overlay Service

ERTMS: European Rail Traffic Management System

ETSO: European Technical Standard Order. Defined by EASA, it gives the requirements that an airborne equipment must meet.

EUROCAE: EURopean Organization for Civil Aviation Equipment

FAA: Federal Aviation Administration (US)

FDE: Fault Detection and Exclusion (detects the presence of a failing satellite and removes it from the positoning)

GNSS: Global Navigation Satellite System

GPS: Global Positioning System

EUSPA: European Union Agency for the Space Programme

ICAO: International Civil Aviation Organization

MOPS: Minimum Operation Performance Standards

PBN: Performance-Based Navigation

PVT: Position, Velocity and Time estimation

RAIM: Receiver Autonomous Integrity Monitoring

RF FRONT END: Radio Frequency frond end

RTCA: Radio Technical Commission for Aeronautics

SARPS: Standards and Recommended Practices

SBAS: Space Based Augmentation System

TSO: Technical Standards Orders