navigation acronyms, abbreviations and definitions - International ...

SHIPPOS SHIP POSitioning Reporting Service
SHOM Service Hydrographique et Oceanographique de la Marine (FR)
SI Surveillance Identifier (SSR Mode S Code)
SI Système Internationale d’Unités
International system of units, the outcome of the 9th General
Conference of Weights and Measures in 1948.
SIA French Aeronautical Information Service
SIAP standard instrument approach procedure
SIC second in command (co-pilot or first officer (air))
SID standard instrument departure
SID sudden ionospheric disturbance
SIF selective identification feature (ATC secondary radar)
SIG GIS (geographic information systems) in many languages
SIG Special Interest Group (RIN)
sigma Greek letter s normally used for standard deviation
SIGMET Significant Meteorological Report
SIGTTO Society of International Gas Tanker and Terminal Operators
SIGWX significant weather
SIL safety integrity level
SIL system integration laboratory
SIM subscriber identification module
SIMRAN Satellite Imaging for Rail Navigation
SIMRSN Singapore Integrated Multiple Reference Station Network
simTD Safe and Intelligent Mobility–Test Field Germany (2012 project)
SINCTA ATCOs’ union in Portugal
single point of
failure
That part of a navigation system which lacks redundancy, so that a
failure in that part would result in a failure of the whole system
(IMO).
SINR Signal to Noise plus Interference Ratio
SINS shipborne/strapdown INS
SIOM standard input/output module
SIP session initiation protocol
SIP single in-line package (chip)
SIPT Société internationale de photogrammétrie et de télédétection
(ISPRS).
SIR signal-to-interference ratio
SIRC Seafarers International Research Centre (Cardiff University)
SIReNaC Database holding ships’ info under the Paris MOU
SIRU space inertial reference unit
SIS signal-in-space
SISA signal-in-space accuracy
SISE signal-in-space error
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