navigation acronyms, abbreviations and definitions - International ...

SNAS Satellite Navigation Augmentation System (Chinese WAAS)
SNCTA ATCOs’ union in France
SNF satellite navigation frame
SNMTT Satellite Navigation and Mobile Telephone Technology (CARDME)
SNPWG Standardisation of Nautical Publications Working Gp (IHO CHRIS)
SNR signal-to-noise ratio
SNS standby navigation system
SNU standard navigation unit
SOA Silicon Oscillating Acclerometer (for MEMS IMU - Draper Labs)
SOA speed of advance (speed to make good)
Estimated speed (of ship) relative to the earth.
SOAP Simple Object Access Protocol (for OpenGIS)
SoC system on chip
SOCP Ship Operations Cooperative Program(me)
Sponsored by the US Maritime Administration (MARAD).
SOCRATES System of Cellular Radio for Traffic Efficiency and Safety (EU)
SOG speed over ground
Speed (of ship) relative to the earth, measured on board (the ship).
SOGI Swiss Organisation for Geo-Information
SOHO Solar and Heliospheric Observatory satellite (joint NASA/ESA)
SOI signal of interest
SOIT Satellite Operational Implementation Team (FAA)
SOL safety of life
SoL Safety of Life Service (Galileo)
Fee-paying service providing integrity info as well as OS features.
SOLAS Safety of Life at Sea (often SOLAS 74)
IMO Convention of 1974.
Sole Means of
Navigation
An approved system that must meet 4 performance requirements:
accuracy, integrity, availability and continuity-of-service.
SOM self organising map (of a neural network)
SoOP signals of opportunity
SOP standard operating procedure
SoP Statement of Principles (EC inviting compliance by states)
eg a 1999 one was on ‘HMI for in-vehicle telematics’.
SOP surface of position
SOPEP Shipboard Oil Pollution Emergency Plan
SOSREP Secretary of State’s Rep for Marine Salvage and Intervention
SOTDMA self-organising time division multiple access
SOTIS self-organising traffic information system (ITS)
SOURDINE French for ‘mute’. EC DGVII Project for reducing airport noise
SP service (and content) provider (eg of telematics services)
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