navigation acronyms, abbreviations and definitions - International ...
navigation acronyms, abbreviations and definitions - International ...
navigation acronyms, abbreviations and definitions - International ...
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SSTL Surrey Satellite Technology Limited<br />
St stratus cloud<br />
STABLE Sediment Transport <strong>and</strong> Boundary Layer Equipment<br />
St<strong>and</strong>ard Time The legally established time for a given zone<br />
STAP space-time adaptive processing (eg to produce CRPA)<br />
STAR St<strong>and</strong>ard Terminal Arrival Route<br />
STARS St<strong>and</strong>ard Terminal Automation Replacement System (FAA)<br />
StB Simplifying the Business (IATA initiative)<br />
STC Supplemental Type Certification (FAA for equipment upgrades)<br />
STCA Short-Term Conflict Alert (System) (used in ATC centres)<br />
STCW St<strong>and</strong>ards of Training, Certification & Watchkeeping for Seafarers<br />
Set in 1978 (STCW 78) <strong>and</strong> amended in 1995 (STCW 95). Manila<br />
amendments from 1 January 2012 will include ECDIS training.<br />
STDCDU st<strong>and</strong>ard CDU<br />
STDMA self-organising time-division multiple-access<br />
STEC slant total electron content (of ionosphere)<br />
STENAV A Galileo simulation facility (space, ground segment & user<br />
STEREO Solar TErrestrial RElations Observatory (2 sats to observe sun - 06)<br />
stick LORAN-C transmitter (as opposed to a transmitter pair)<br />
STNA Service Technique Navigation Aerienne (France)<br />
Stochastic Governed by the laws of probability<br />
STOWASUS Storm, Wave <strong>and</strong> Surge (EU MAST IV project)<br />
STP st<strong>and</strong>ard temperature <strong>and</strong> pressure (=ISA)<br />
STPM synchronizer time-pulse modulator (Chayka)<br />
Stratosphere Part of atmosphere from ~ 14-50 km<br />
Stratum Minimum performance requirements for digital network synch<br />
ANSI 1987 St<strong>and</strong>ard. Stratum 1 = atomic st<strong>and</strong>ard with<br />
fractional frequency offset of 1 x 10 -11 or less. Stratum 2 = drift<br />
of less than 2.5 x 10 -11 per day. Stratum 3 = less than 3.7 x 10 -7<br />
per day. GPS & eLoran give Stratum 1 quality.<br />
STREP Specific Targeted Research Project (EC FP6)<br />
STREP Specific Targeted Research Projects (EU FP6)<br />
STRV Space Technology Research Vehicle<br />
STS ship-to-ship transfer<br />
STW speed through water (speed of ship relative to the water surface)<br />
STW St<strong>and</strong>ards of Training <strong>and</strong> Watchkeeping (IMO Sub-Ctee)<br />
SUA special use airspace<br />
SUBC self-unloading bulk carrier<br />
SUC specific use contract<br />
SUCG Scottish Users’ Consultative Group (NLB)<br />
SUP south pole up (of a magnet)<br />
SUPL Secure User Plane for Location (protocol for A-GPS)<br />
129<br />
March 2012
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