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GPS Acronyms

Below is a list of acronyms that you may come across while playing with GPS technologies.

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Acronym Details
SA Selective Availability
SAE Society of Automotive Engineers
SAR Search And Rescue
SARSAT Search and Rescue Satellite Aided Tracking
Sat Nav Satellite Navigation (Transit System)
SBAS Satellite Based Augmentation System
SC Safety Computer
SCATI Special Category I
SCAT-I Special Category I
SD Standard Deviation
SEP Sphere Error Probable
SG Signal Generator
SGS-90 Soviet Geodetic System 1990
SHF Super High Frequency
SI Système Internationale
SigGen WAAS GUS Type-1 Signal Generator
SiS Signal in Space
SLIP Serial Line Internet Protocol
SLR Satellite Laser Ranging
SNAS Satellite Navigation Augmentation System (China)
SNR Signal To Noise Ratio
SOA Speed Of Advance
SOCUS South Central U.S. Chain (Loran-C)
SOG Speed Over Ground
SOIT Satellite Operational Implementation Team
SOL Safety-of-Life
SPAN™ Synchronized Position Attitude Navigation
SPS Standard Positioning Service
SQM Signal Quality Monitoring
SRAM Static Random Access Memory
SU (former) Soviet Union (now Russia)
SV Space Vehicle
SVID Space Vehicle Identifier
SVN Space Vehicle NAVSTAR, Also Known As Space Vehicle Number
SW Software
SWRU Software Replacement Unit


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