navigation acronyms, abbreviations and definitions - International ...

SR2 sunrise
SRA Strategic Rail Authority (UK)
SRA surveillance radar approach
SRC Safety Review Commission (EUROCONTROL)
SRC Short Range Certificate (for GMDSS VHF equipment)
SRD short-range device (eg electronic car key)
Typicallly use 418 MHz in UK, 433.92 MHz in Europe.
SRD system/software requirements document
SRG Safety Regulation Group (UK CAA)
SRGPS Shipboard Relative GPS (uses LAAS to replace radar)
SRR Search and Rescue Region
SRR short-range radar (usually for vehicles using 24 GHz UWB)
SRR system requirements review
SRS Shipboard Reference System (for deck landings)
SRU shop-replaceable unit
SS sandstorm (met)
SS signal strength
SS space segment
SS spread spectrum
SS sunset
SSA Specific Support Action (EU FP6)
SSA system safety analysis
SSB single sideband
SSC Single Sky Committee (EU)
SSCC Safety Standards Consultative Committee (EASA)
SSFC sequential single-frequency code system
SSH sea surface height
SSI small scale integration (of chips)
SSKL ATCOs’ union in Slovenia
SSL signal simulation level
SSN SafeSeaNet (EU & EEA to exchange info on ship moves & cargo)
SSOA Standby Ship Operators’ Association (became ERRVA in May 2000)
SSOG solid-state optical gyro
SSP synchronous serial port
SSPA solid-state power amplifier
SSR Sagnac sensing ring (of optical gyro)
SSR secondary surveillance radar
SSSI Site of Special Scientific Interest
SST satellite-to-satellite tracking
SST sea surface temperature
SST supersonic transport
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March 2012