navigation acronyms, abbreviations and definitions - International ...

GATS Global Automotive Telematics Standard
Decided by the GATS Forum (23 companies, service-providers and
universities). GATS 2 (1999) is an open standard for transferring
traffic info, emergency call, breakdown, dynamic navigation and general
info using GPS and GSM. Submitted for inclusion in CEN TC 278
GAUA Galileo adaptive user algorithm
GAUSS Global AUgmentation for Satellite Systems
Concept of integratd navigation using core satellite-based and
augmentation systems eg NELS.
Gauss-Markov Component used to refine GPS ionospheric delay model
GAWG General Aviation Working Group (CAA)
Gb gigabyte (= 1,024 megabytes)
GB gyro bearing (angular distance from GN to the object)
GBAS Ground-Based Augmentation System
GBAS-B Ground-Based Augmentation System Broadcast
GBCN ground-based communications network
GBEN ground-based external navigation (system)
GBT ground-based transmitter
GC great circle (orthodrome)
The intersection of a sphere on the earth and a plane through its
centre.
GC gyro course
Intended direction of movement (of the ship), defined by the angle
between gyro north and the fore-and-aft line (of the ship), expressed
in angular units from gyro north (000º).
GCA ground-controlled approach
GCAS ground collision avoidance system
GCC Galileo Control Centre
GCI ground-controlled interception
GCOS Global Climate Observing System
GCS Ground Control Segment (Galileo)
GDA GEBCO Digital Atlas
GDF Geographic Data File
The European standard used to describe and transfer road networks
and road-related data for the mapping industry.
GDGPS Global Differential GPS (US)
GDOP geometric dilution of precision
The factor by which the accuracy of a 3-D fix and time are degraded
by geometrical considerations.
GE gyro error correction
Correction of gyro heading error (inc speed error) of a gyro compass.
Angle between TN and GN, from TN eastwards named E (+), westwards
named W (-).
GEBCO General Bathymetric Chart of the Ocean (IHO project)
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