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G

GB —  GE —  GFE —  GMI —  GRA

ACRONYM
DEFINITION
CONTRIBUTOR
G
Giga (billion)
CASI
G
(Gravitational Force/Constant)
CASI
g
Gluon
CASI
g
Gram
CASI
G&A
General and Administrative
Goddard
G/E
Graphite Epoxy
Goddard
G/O
Gain Offset
Goddard
G/T
Gain over Temperature
Goddard
GA
General Aviation
Langley
GAAP
Generally Accepted Accounting Principles
Goddard
GAC
Global Area Coverage
CASI
GACP
Global aerosol Climatology Project
CASI
GAIM
Global Analysis, Interpretation, and Modeling (Program)
Goddard
GALCIT
Graduate Aeronautical Lab., California Institute Technology
CASI
GALCIT
Guggenheim Aeronautical Lab., (at California Institute of Technology)
CASI
GALE
Genesis of Atlantic Lows Experiment
CASI
GAMA
General Aviation Manufacturers Association
CASI
GAME
GEWEX Asian Monsoon Experiment
Goddard
GAMES
Gravity and Magnetic Earth Surveyor (GSFC)
Langley
GAMES
Gravity and Magnetics Earth Survey
Goddard
GAME-T
GEWEX Asian Monsoon Experiment-Tropics
Goddard
GAMMA
Guide Star Astrometric Measuring Machine
Goddard
GAMP
Global Atmospheric Measurements Program (NSF)
CASI
GAMP
Group Agromet Monitoring Project
CASI
GAMS
Gas and Aerosol Monitoring Sensorcraft
Langley
GAMS
Global Atmospheric Measuring Sounder
Goddard
GAMS
GSFC Acquisition Management System
Goddard
GAO
General Accounting Office
Langley
GAO
Government Accountability Office (formerly General Accounting Office)
CASI
GAP
Gap Analysis Project
Goddard
GAP
General Aviation Propulsion
Goddard
GAP
Glycidyl Azide Polymer
CASI
GAPAN
Guild of Air Pilots and Air Navigators
Langley
GARF
GSFC Antenna Range Facility
Goddard
GARP
Global Atmospheric Research Program (Sponsored by the World Meteorological Organization)
CASI
GAS
Get-Away Special (Space Shuttle)
CASI
GAS BRIDGE
Get-Away Special Bridge (Holds up to 12 GAS canisters)
CASI
GASCAN
Get-Away Special Cannister
CASI
GASL
General Applied Science Laboratories
Langley
GASP
Guide Star Astrometric Support Package
Goddard
GASP
General Aviation Synthesis Program
CASI
GASP
Generalized Aerodynamic Simulation Programs
CASI
GASP
Global Air Sampling Program
CASI
GASP
Global Atmospheric Sampling Program (NASA)
CASI
GATE
GARP Atlantic Tropical Experiment
CASI
GATE
Getaway Tether Experiment
CASI
GATF
Graphic Arts Technical Foundation
Langley
GATT
General Ageeement on Tariffs and Trade
CASI
 
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GB
Gigabytes
Langley
Gb
Gigabit
CASI
GBO
Ground Based Observatory
Goddard
Gbps
Gigabits per second
CASI
GBRS
Generic Block Recording System
Goddard
GBS
Global Broadcasting System
Goddard
GBS
Ground Based Spectroscopy
Goddard
GBSRN
Global Baseline Surface Radiation Network
Langley
GC
Ground Control
Goddard
GC/MS
Gas Chromatograph/Mass Spectrometer
CASI
GC/OST
Ground Control/Observational Sequence Table
Goddard
GCA
Ground Controlled Approach
CASI
GCDIS
Global Change Data and Information System
CASI
GCE
Goddard Cumulus Ensemble (model)
Goddard
GCE
Graphite fiber/Cyanate Ester
Goddard
GCE
Ground Communications Equipment
Goddard
GCF
Grid Characterization Facility
Goddard
GCI
Generic Channel Interface
Goddard
GCIP
GEWEX Continental-scale International Project
CASI
GCM
Global Circulation Model
Goddard
GCM
Global Climate Model
Goddard
GCM
Ground Control Message
Goddard
GCM
General Circulation Model
CASI
GCMR
Ground Configuration Message Request
Goddard
GCMR
Ground Control Message Request (SN)
Goddard
GCMS
Gas Chromatograph Mass Spectrometer
CASI
GCN
Gamma-Ray Burst Coordinates Network
Goddard
GCOS
Global Climate Observing System
Goddard
GCP
Goddard Corporate Park
Goddard
GCP
Glass-Cloth Phenolic; GLO CRYOHP Payload
CASI
GCR
Galactic Cosmic Rays
Goddard
GCR
Galactic Cosmic Radiation
CASI
GCR
Gas Cooled Reactor
CASI
GCTE
Global Change and Terrestrial Ecosystems (IGBP)
Goddard
GCTI
Global Change Technology Initiative
Langley
GDE
Gimbal Drive Electronics
Goddard
GDHS
Ground Data Handling System
CASI
GDLF
Gas Driven Lift Fan
CASI
GDM
Goddard Directive Management
Goddard
GDMA
Glycol Dimethacrylate
CASI
GDMS
Goddard Directives Management System
Goddard
GDOP
Geometric Dilution of Precision
CASI
GDP
Gross Domestic Product
Goddard
GDP
Ground Data Processing
Goddard
GDR
Geophysical Data Records
CASI
GDR
Giant Dipole Resonance
CASI
GDS
Goldstone, California, DSN Tracking Station
Goddard
GDS
Ground Data System
Goddard
GDSCC
Goldstone Deep Space Communication Complex
CASI
 
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GE
General Electric Co.
Langley
GE
General Electric American Communications, Inc.
CASI
GEA
Gimbal Electronics Assembly
Goddard
GEBA
Global Energy Balance Archive
Goddard
GEC
Geospace Electrodynamic Connections
Goddard
GED
Global Electrodynamics
Goddard
GEI
Ground Environmental Instrumentation
CASI
GEIS
Generic Edited Information Set
Goddard
GEM
Ground Equipment Model
Goddard
GEM
Goddard Earth Model (of gravity)
CASI
GEMET
General European Multilingual Environment Thesaurus
CASI
GEMS
Global Environment Monitoring System
Langley
GEMT1
Goddard Earth Model T1
CASI
GEMT2
Goddard Earth Model T2
CASI
GEN
Generation
Goddard
GENESIS
Global Environmental and Ecological Simulation of Interactive Systems
Goddard
GenSAA
Generic Spacecraft Analyst Assistant
Goddard
GEO
Geostationary Earth Orbiter
Goddard
GEO
Geosynchronous Earth Orbit
CASI
GEO TROPSAT
Geostationary Troposheric Pollution Satellite
Langley
GEOCOMP
Geocoding and Compositing System
Goddard
GEODSS
Ground-Based Electro-Optical Deep Space Surveillance
CASI
GEOLAB
Geometry Laboratory
Langley
GEOlD
Gravity for Earth, Ocean, and Ice Dynamics
Goddard
GEONS
GPS Enhanced On-board Navigation System
Goddard
GEONS
GPS-Enhanced Orbit Navigation System
CASI
GEOS
Geodynamics Experimental Ocean Satellite
Goddard
GEOS
Global Earth Observing System
CASI
GEOS
Goddard EOS (model)
Goddard
GEOS
Geodynamic Experimental Ocean Satellite
CASI
GEOSAR
Geosynchronous Earth Orbit Synthetic Aperture Radar
CASI
GEOSARI
GEOS launch by Ariane (ESA geostationary satellite with elliptical orbit)
CASI
Geosat
Geodetic Satellite
Langley
GEOTAIL
Geomagnetic Tail Laboratory
Goddard
GEOTROPSAT
GEOstationary TROpospheric Pollution SATellite
Langley
GEP
Goddard Experiment Package Telescope
CASI
GERB
Geostationary Earth Radiation Budget
Goddard
GERT
Graphical Evaluation and Review Techniques
CASI
GEST
Goddard Earth Science and Technology
Goddard
GESTA
Goddard Engineers, Scientists, and Technicians Association
Goddard
GET
Ground Elapsed Time
CASI
GETR
General Electric Test Reactor
CASI
GETS
General Environmental Test Specification
Goddard
GEV
Giga Electron Volts
Goddard
GeV
Gigaelectronvolts
CASI
GEVS
General Environmental Verification Specification
Goddard
GEVS-SE
General Environmental Verification Specification for STS and ELV Payloads, Subsystems, and Components
Goddard
GEWA
Goddard Employee Welfare Association
Goddard
GEWEX
Global Energy Change and Water Cycle Experiment
Langley
GEWEX
Global Energy and Water Cycle Experiment
CASI
GFCR
Gas Filter Correlation Radiometer (NASA)
Langley
GFCR
Gas Filter Correlation Radiometry
CASI
GFD
Government-Furnished Data
Langley
GFDL
Geophysical Fluid Dynamics Laboratory
CASI
 
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GFE
Government Furnished Equipment
Goddard
GFF
Government Furnished Facilities
Goddard
GFFC
Geophysical Fluid Flow Cell (A model prepared for Spacelab flights which is concerned with convective instability in vertically unstable atmospheres)
CASI
GFM
Global Fault Management
Goddard
GFM
Global Fault Manager
Goddard
GFM
Government Furnished Material
Goddard
GFO
GEOSAT Follow-On
Goddard
GFP
Government Furnished Property
Goddard
GFRP
Glass Fiber Reinforced Plastic
Goddard
GFRP
Glass Fiber Reinforced Polyester
CASI
GFRP
Graphite Fiber-Reinforced Plastic
Goddard
GFS
Government Furnished Supplies
Goddard
GFY
Government Fiscal Year
CASI
GFZ
GeoForschungs Zentrum (Potsdam, Germany)
Goddard
GG
Gravity Gradient
Goddard
GGD
Global Geocryology Database
Goddard
GGG
Gadolinium-Gallium Garnet
CASI
GGM
Gravity Gradient Mode
Goddard
GGM
Gravity Gradiometer Mission (NASA)
Langley
GGS
Global Geospace Science
Goddard
GGS
Global Geospace Study
CASI
GGT
Gravity Gradient Torques
Goddard
GHB
Goddard Handbook
Goddard
GHCD
Growth Hormone Concentration & Distribution in Plants
CASI
GHCN
Global Historical Climatology Network
Goddard
GHRS
Goddard High Resolution Spectrograph
Goddard
GHRS RB
GHRS Relay Box
Goddard
GHz
Gigahertz
CASI
GI
Gastro-Intestinal
CASI
GIA
Government Inspection Agency
Goddard
GIDEP
Government-Industry Data Exchange Program
CASI
GIF
Graphical Interchange Format
Goddard
GIF
Graphics Interchange Format (introduced by CompuServe)
CASI
GIFOV
Ground Instantaneous Field of View
CASI
GIFTS
Geostationary Imaging Fourier Transformer Spectrometer
Langley
GIFTS
Geosynchronous Imaging Fourier Transform Spectrometer (NASA’s name for the NASA/Navy (IOMI)/NOAA satellite)
CASI
Giga-
A prefix meaning multiplied by 1 billion, as in Gigabyte, GB, or Gbyte (Computer science)
Langley
GII
Global Information Infrastructure (GII)
CASI
GIIS
General Instrument Interface Specification
Goddard
GILD
Goddard Infrared Locking Data system
Goddard
GILS
Government Information Locator Services
CASI
GILS
Ground Independent Landing System
CASI
GIMMS
Global Inventory Modeling and Monitoring System
CASI
GIMRADA
Geodesy, Intelligence and Mapping Research and Development Agency, Fort Belvoir, VA (Army Engineer)
CASI
GIPSY
Generalized Information Processing SYstem
CASI
GIRD
General Interface Requirements Document
Goddard
GIS
Geographic Information System
CASI
GISP
Greenland Ice Sheet Project
Goddard
GISS
Goddard Institute for Space Science
CASI
GJ
Measure of Torsional Stiffness
CASI
GL
Government Leased
Goddard
GLACE
Global Land-Atmosphere Coupling Experiment
CASI
GLAS
General Ledger Accounting System
Goddard
GLAS
Geoscience Laser Altimeter System
Goddard
GLAS
Goddard Laboratory for Atmospheric Sciences Geoscience Laser Altimeter System
CASI
GLAST
Gamma-ray Large Aperture Space Telescope
Goddard
GLC
Gravity Induced Loss of Consciousness
CASI
GLCM
Gray Level Cooccurrence Matrix
CASI
GLCTS
Global Land Cover Test Site Initiative
Goddard
GLES
Goddard Leadership Education Series
Goddard
GLFS
Great Lakes Forecasting System
CASI
GLI
Global Imager
Goddard
GLIMS
Global Land Ice Monitoring from Space
Goddard
GLIS
Global Land Information System
CASI
GLO
Shuttle Glow (Hitchhiker payload to measure optical emissions observed on the surface of spacecraft and Shuttle)
CASI
GLOBE
Global Backscatter Experiment
Langley
GLOBE
Global Learning and Observations to Benefit the Environment
Goddard
GLOBEC
Global Ocean Ecosystem Dynamics
Goddard
GLOCHEM
Global Chemistry
Langley
GLOMR
Global Low Orbit Message Relay
CASI
GLOTRAC
Global Tracking Network
CASI
GLOWATS
Global War Avoidance Telecommunications System
CASI
GLRS
Geodynamics Laser Sensing System
CASI
GLRS
Geoscience Laser Ranging System
CASI
GLS
Gust Load Alleviation
Langley
GMAP
Geometric Modeling Applications Interface Program
Goddard
 
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GMI
Giant Magneto-Impedance
CASI
GMI
Global Modeling Initiative
CASI
GMI
Goddard Management Instruction
Goddard
GMS
Geostationary Meteorological Satellite
CASI
GMSR
General Management Status Review
Goddard
GMT
Generic Mapping Tool
Goddard
GMT
Greenwich Mean Time
CASI
GN
Ground Network
Goddard
GN&C
Guidance, Navigation and Control
Goddard
GNC
Guidance, Navigation, and Control (Space Shuttle)
CASI
GNCC
Guidance, Navigation, and Control Center
Goddard
GNCC
Guidance, Navigation, and Control Controller
Goddard
GNP
Gross National Product
Goddard
GNSS
Global Navigation Satellite System
CASI
GO
General Observer
Goddard
GO
Guest Observer
Goddard
GO
Government Owned
Goddard
GO/AR
Guest Observer/Archival Researcher
Goddard
GOA
Geometrical Optics Approximation
CASI
GOALS
Global Ocean-Atmosphere-Land System
Goddard
GOAT
Grouped Optimal Aggregation Technique
CASI
GOC
Ground Operations Coordinator (NASA)
CASI
GOES
Geosynchronous Operational Environmental Satellite (NASA)
Langley
GOES
Geosynchronous Orbital Earth Satellite (MCD)
Langley
GOES
Geostationary Operational Environmental Satellite
CASI
GOES-TAP
GOES Telecommunications Access Program
CASI
GOFS
Global Ocean Flux Study
Langley
GOLIATH
Giant On-Line Instrument for the Acquisition and Total Handling of data
CASI
GOMAC
Government Microcircuit and Applications Conference
Langley
GOME
Global Ozone Monitoring Experiment
CASI
GOMOS
Global Ozone Monitoring by Occultation of Stars (ESA)
Goddard
GOMR
Global Ozone Monitoring Radiometer
Langley
GONG
Global Oscillation Network Group
CASI
GOPEX
Galileo Optical Experiment
CASI
GOSAMR
Gelation of Sols: Applied Microgravity Research
CASI
GOSB
General Observer Support Branch
Goddard
GOSET
Operational Group for the Standard for Exchange and Transfer
Goddard
GOSS
Ground Operational Support System
CASI
GOV
Government Owned Vehicle
Langley
GOWG
Ground Operations Working Group
Goddard
GOX
Gaseous Oxygen
CASI
GOX
Gaseous Quantum Container
CASI
GP-B
Gravity Probe-B
Goddard
GP-B
Gravity Probe-B Experiment
CASI
GPC
Gyro Pulse Count
Goddard
GPC
General Purpose Computer (Space Shuttle)
CASI
GPCOE
General Purpose Checkout Equipment
Goddard
GPCP
Global Precipitation Climatology Project
CASI
GPD
GSFC Policy Directive
Goddard
GPFS
General Purpose Flight Simulator
Langley
GPG
Goddard Procedures and Guidelines
Goddard
GPI
Global Precipitation Index
CASI
GPIB
General Purpose Interface Bus
Goddard
GPM
Global Precipitation Measurement
Goddard
GPMC
Governing Program Management Council
Goddard
GPMS
Galileo Probe Mass Spectrometer
Goddard
GPO
Government Printing Office
CASI
GPP
Government Performance Project
Goddard
GPP
Gross Primary Productivity
Goddard
GPPM
Gas Permeable Polymer Materials
Langley
GPRA
Government Performance and Results Act
Goddard
GPRA
Government Performance Review Act
Goddard
GPS
Global Positioning Satellite
Langley
GPS
Global Positioning System
CASI
GPSOS
Global Positioning Sensor Occultation System
Goddard
GPSR
Global Positioning Satellite Receiver
Goddard
GPTS
Ground Power Test Set
Goddard
Gr/E
Graphite-Epoxy
CASI
 
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GRA
Government Report Abstracts
CASI
GRACE
Gravity Recovery and Climate Experiment
Goddard
GRAM
Global Reference Atmosphere Model
CASI
GRB
Gamma-Ray Burst
Goddard
GRC
Glenn Research Center (Cleveland, OH)
Langley
GRDC
Global Runoff Data Center
Goddard
GRE
Graphite Epoxy
Goddard
GRGT
Guam Remote Ground Terminal
Goddard
GRID
Gamma Ray Imaging Device
CASI
GRIN
GReat Images in NASA website
CASI
GRIS
Gamma-Ray Imaging Spectrometer
Goddard
GRIS
Global Resources Information System
CASI
GRIST
Grazing Incidence Solar Telescope (for Spacelab)
CASI
GRITS
Gamma Ray Imaging Telescope System
CASI
GRM
Gravity Research Mission
Goddard
GRM
Geopotential Research Mission
CASI
GRO
Gamma Ray Observatory
Goddard
GRO
Gamma-Ray Observatory
CASI
GRP
Glass Reinforced Plastic
CASI
GRS
Gamma Remote Sensing Spectrometer
Goddard
GRS
Gamma-Ray Source
CASI
GRS
Gamma-Ray Spectrometer (from SMM)
CASI
GRS
Generic Recording System
Goddard
GRS
Geometric Radiating Surface
CASI
GRS
Great Red Spot
CASI
GRU
Ground Replaceable Unit
Goddard
GS
Ground Segment
Goddard
GS
Ground Speed (Aviation)
Langley
GS
Ground System
Goddard
GS
Guide Star
Goddard
GS&O
Ground Systems and Operations
Goddard
GSA
General Services Administration
CASI
GSACQ
Guide Star Acquisition Working Group
Goddard
GSAT
Ground System Acceptance Test
Goddard
GSBCA
General Services Board of Contract Appeals
Langley
GSC
Guide Star Catalog
Goddard
GSD
Guide Star Determination
Goddard
GSE
Government Supplied Equipment
Goddard
GSE
Ground Systems Engineering (MOC)
Goddard
GSE
Ground Support Equipment
CASI
GSESW
Ground Support Equipment Software
Goddard
GSFC
Goddard Space Flight Center
CASI
GSI
Goddard Safety Initiative
Goddard
GSI
Government Source Inspection
Goddard
GSIF
Ground Station Interface Facility
Goddard
GSMO
Ground Systems Management Office
Goddard
GSO
Ground Systems and Operations
Goddard
GSO
Geosynchronous Orbit
CASI
GSOC
German Space Operations Center
Goddard
GSOPS
Guide Star Operational System
Goddard
GSOWG
Ground Systems and Operations Working Group
Goddard
GSP
Government Specified Purchase
Goddard
GSPR
Guide Star Space Problem Reports
Goddard
GSRP
Graduate Student Researcher Program
Goddard
GSRP
Ground Safety Review Panel
Goddard
GSS
Gichner Shelter System
Goddard
GSS
GOES Sectorizer System
CASI
GSS
Ground Station Simulator
Goddard
GSS
Ground Support System
Goddard
GSS
Gyro Subsystem (HIRDLS)
Goddard
GSSS
Guide Star Selection System
Goddard
GST
Ground System Test
Goddard
GSTDN
Ground Spaceflight Tracking and Data Network
CASI
GSTV
Ground System Thermal Vacuum
Goddard
GT
Grid Tool
Langley
GT
Global Temperature
CASI
GTA
Gas Tungsten Arc
CASI
GTC
Grand Tour Cluster
CASI
GTDM
Generic Time Division Multiplexed
Goddard
GTDS
Goddard Trajectory Determination System
Goddard
GTE
Global Tropospheric Experiment (NASA)
CASI
GTE-DACOM
Global Tropospheric Experiment-Differential-Absorption Carbon Monoxide Monitor
Langley
GTF
Ground Test Facility
CASI
GTL
Geomagnetic Tail Laboratory (Satellite in the OPEN program)
CASI
GTM
Generic Transport Model
Langley
GTO
Geostationary Transfer Orbit
Goddard
GTO
Guaranteed Time Observers
Goddard
GTO
Geosynchronous Transfer Orbit
CASI
GTO
Guaranteed Observing Time
CASI
GTOS
Global Terrestrial Observing System
Goddard
GTS
Ground Test System
Goddard
GTSIM
Generic Telemetry Simulator
Goddard
GTWS
Global Tropospheric Winds Sounder
Goddard
GUI
Graphical User Interface
CASI
GUS
Goddard Upper Stage
Goddard
GUS
Gyroscopic Upper Stage
CASI
GV
Gigavolt
CASI
GvaP
GEWEX Water Vapor Project
Goddard
GVB
Generalized Valence Band (Quantum chemistry)
CASI
GVC
Goddard Voice Control
Goddard
GVSC
Generic VHSIC Spaceborne Computer
Goddard
GW
Ground Wetness
Goddard
GW
Gravitational Wave
CASI
GWU
George Washington University
Langley
gx
(Vibrational Acceleration in the Direction of the X-Axis)
CASI
gy
(Vibrational Acceleration in the direction of the Y-Axis)
CASI
Gy
Gray (Radiation dosage unit of measure)
CASI
gz
(Vibrational Acceleration in the direction of the Z-Axis)
CASI
 
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