navigation acronyms, abbreviations and definitions - International ...

GRC Geospacial Research Centre (Christchurch, NZ)
Joint venture between U of Nottingham (UK) and U of Canterbury
(NZ). Formed Nov 06.
GREAT Galileo REceiver for the mAss markeT
2-year, E6 million project under EC FP6. Led by PA Consulting Gp.
GRI Group Repetition Interval (LORAN-C/eLORAN)
Integer in range 4,000 to 9,999. Time interval between pulse groups in
10s of microseconds.
GRINGO GPS RINEX Generator (IESSG)
GRM GPS receiver module
gross error Or ‘outlier’ is error other than random or systematic error. Often
large and, by definition, unpredictable (After IMO).
GRP glass reinforced plastic
GRR ground reference receiver
GRT gross registered tonnage
GS glideslope
GSA European GNSS Agency (took over from GJU)
GSB Galileo Security Board
GSC Galileo Security Committee
GSDI Global Spacial Data Infrastructure
GSE ground support equipment
GSI Geographical Survey Institute (Japan)
GSM Groupe Speciale Mobile or Global System for Mobile
Digital mobile phone structure also allowing 160-character alphanumeric
messages (SMS). Uses narrow-band TDMA giving 8 slots per
frequency at 9.6 kbps.
GSM-R GSM-Railway (part of ERTMS)
Secure voice/data comms between drivers & signallers (UK in 2013?).
GSO geo-synchronous orbit
GSOS GPS Surface Observing System (US)
GSPS Global System Performance Specifications (ICAO)
GSS Galileo Sensor Station
GSS geospatial server (central server for real-time traffic guidance)
GSSB Galileo System Security Board
GSSF Galileo System Simulation Facility (ESA)
GST Galileo System Time (spec within 50 ns 95%)
GST Greenwich Siderial Time
GSTARS Ground Safety Tracking and Reporting System (for airfields)
GSTB Galileo System Test Bed
GSTBV2A Galileo System Test Bed Vehicle 2A (GIOVE-A)
To secure Galileo frequency filing and provide a test SIS. Soyuz
launched Dec 05. SSTL.
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March 2012