Acronyms
G.O.
Geodetic Observatory
GA
General Assembly
GAC
GRACE Average of non-tidal atmosphere and ocean Combination
GAGNES
Gaia for AGN and Extragalactic Science
GaiaNIR
Gaia Near Infra-Red [mission]
GAUS
GB
Governing Board
Gb
gigabit
Gbps
gigabit(s) per second
GCI
GEOSS Common Infrastructure
GCRF
Gaia Celestial Reference Frame
GCRS
Gaia Celestial Reference System
GDR
Geophysical Data Record
GDSCC
GEO
Group on Earth Observations
GeoDAF
Geodetic Data Archiving Facility
GEODVEL
GEODetic VELocity [model]
GFO
GEOSAT Follow-On [satellite]
GFU
GFZ Ultra Rapid orbits
GGCN
Global GGOS network of core sites
GGF
global geophysical fluids
GGFC-OC
GGFC Operational Component
GGFC-SSC
GGFC Science Support Component
GGIM
= UN GGIM
GHz
gigahertz
GIA
glacial isostatic adjustment
GIC
GGOS Intergovernmental Committee
GIM
Global Ionospheric Maps
GINS
Geodesy by Simultaneous Digital Integration [software]
GIPSY/OASIS
GNSS-Inferred Positioning System and Orbit Analysis Simulation Software
GIQC
Gaia Initial Quasar Catalog[ue]
GIUB
Geodetic Institute of the University of Bonn (formerly; now: IGGB)
GLDAS
NASA's Global Land Data Assimilation System
GLO
= Glonass
GLONASS
GLObal'naya NAvigatsionnaya Sputnikovaya Sistema [Global Orbiting Navigation Satellite System, Russia]
GLOSS
Global Sea Level Observing System
GLOUP
GLObal Undersea Pressure
GM
General Meeting, geocenter motion
GMES
Global Monitoring of Environment and Security
GMF
Global Mapping Function
GMST
Greenwich Mean Sidereal Time
GMU
George Mason University
GNAAC
IGS Global Network Associate Analysis Center
GNSS
Global Navigation Satellite System
GNU
GNU's Not Unix
GOCE
Gravity field and Ocean Circulation Explorer
GOP
Geodetic Observatory Pecny
GOPE
Geodetic Observatory Pecny
GOU
GOPE Ultra Rapid orbits
GP
Galactic plane
GPS
Global Positioning System
GPST
GPS Time
GPT
Global Pressure and Temperature
GRACE-FO
GRACE Follow-On
GRACE, Grace
Gravity Recovery and Climate Experiment
GRASP
Geodetic Reference Antenna in Space
GRB
gamma-ray burst
GRG
DORIS Analysis Center at CNES/CLS (formerly LCA)
GRS
Geodetic Reference System
GS
Gemini South [telescope]
GSC
GSFC Analysis Center
GSC2.3
[HST] Guide Star Catalog 2.3
GSFD
VLBI solution by GSFC
GSI
Geospatial Information Authority of Japan (formerly: Geographical Survey Institute)
GSM
GRACE Satellite only Model
GST
Greenwich Sidereal Time
GTRF
Galileo Terrestrial Reference Frame
GTRS
Geocentric Terrestrial Reference System
GTZ
GFZ TIGA
GUHS
Global Unified Height System
GVRS
Global Vertical Reference System
GZ
GEOZUP Company
