ANTEX - Antenna Exchange format

BMWi - Bundesministerium für Wirtschaft und Technologie
Federal Ministry of Economics and Technology, Germany

DLR - Deutsches Zentrum für Luft- und Raumfahrt
German Aerospace Center

DOP - Dilution Of Precision

EC - European Commission

EGNOS - European Geostationary Navigation Overlay System
An overlay system for the GPS service which enhances the accuracy of GPS navigation by transmitting differential information.

ENC - European Navigation Conference

Ephemeris
A table of detailed and precise satellite orbital positional information.

ERP - Earth Rotation Parameters

ESA - European Space Agency

ESSP - European Satellite Service Provider

FAA - Federal Aviation Administration (USA)

FD - Fault Detection

FDE - Fault Detection and Exclusion

GalTeC - Galileo Technology Center
GalTeC is a development project under a contract of the German Aerospace Center DLR funded by the Federal Ministry of Economics and Technology (BMWi). The application concept of GalTeC is to provide value added services related to the provision of GNSS satellite-only services.

GBAS - Ground-Based Augmentation System

GIOVE - Galileo In Orbit Validation Element
Giove is a test satellite used to demonstrate and validate the technologies developed under the GALILEO project.

GLONASS - Global Navigation Satellite System
The Russian global navigation satellite system.

GNSS - Global Navigation Satellite System

GPS - Global Positioning System
Global navigation satellite system financed and operated by the U.S. Department of Defense.

GSA - European GNSS Supervisory Authority

IAIN - International Association of Institutes of Navigation

IANC - Information-Analytical Centre for GLONASS (Russia)

IERS - International Earth rotation and Reference systems Service

IGS - International GNSS Service

ION - Institute of Navigation (USA)

IONEX - Ionospheric Exchange data format

MSAS - Multi Satellite Augmentation System

NANU - Notice Advisory to NAVSTAR Users

NAVSTAR - Navigation Signal Timing And Ranging

OD & TS - Orbit Determination and Time Synchronization

PVT - Position, Velocity and Time

RAIM - Receiver Autonomous Integrity Monitoring

RINEX - Receiver Independent Exchange format

SBAS - Satellite Based Augmentation System

SINEX - Solution Independent Exchange format

SIS - Signal In Space

SISA - Signal In Space Accuracy

SISMA - Signal In Space Monitoring Accuracy

SISRA - Signal In Space Reference Accuracy

SISRE - Signal In Space Reference Errors

SOL - Safety of Life Service

SV - Space Vehicle (Satellite)

UERE - User Equivalent Range Error

ULS - Up-Link Station

URA - User Range Accuracy

WAAS - Wide Area Augmentation System

YUMA
The GPS Almanac format.