navigation acronyms, abbreviations and definitions - International ...

UKMF UK Maritime Forum
Informal forum of ICS, IMarE, NI, RIN, RINA, and SUT.
UKMO UK Meterological Office
UKMPA UK Maritime Pilots’ Association
UKOOA UK Offshore Operators Association
UKSAR United Kingdom Search & Rescue Committee
UKSCC United Kingdom Satnav Co-ordination Committee
UKSON UK Safety of Navigation (MCA Ctee)
ULB underwater location beacon (eg for blackboxes)
ULBC ultra large bulk carrier
ULCC ultra large crude carrier
ULCC ultra large crude carrier
ULI Research & Development Council for Land (Swedish AGI)
ULS Up-Link Station (Galileo)
UML Unified Modelling Language
UMRP user minimum received power
UMS Universal Measurement System (shipping)
UMTS Universal Mobile Telecommunications Service (3G)
3rd generation mobile phone standard (2002+) combining speech and
internet (IP). Works up to 2 Mbps. Internationally known as
IMT 2000.
UN United Nations
UNCLOS United Nations Convention on the Law of the Sea
UNE user navigation error (may be horizontal UHNE or vertical UVNE)
Broadly equal to the constellation ranging error x DOP.
UNIGRACE Unification of Gravity Systems in Central and Eastern Europe
UNISIG Railway signalling & comms industry consortium
UNIX A computer operating system (AT&T)
UNOOSA United Nations Office for Outer Space Affairs
UNTOC un-TOC second offset (LORAN-C)
UPRN Unique Property Reference Number (UK OS & Post Office)
UPS uninterrupted power supply
UQ ultra-quick flashing light
URA user range accuracy
Prediction of max UERE (minus ionospheric error) broadcast in each
GPS satellite’s navigation message.
Uragan Name given to GLONASS satellites
URAV unmanned reconnaissance air vehicle
URE user range error (GPS)(see UERE)
Range error along path between sat and rx that user will experience.
URL Uniform Resource Locator (Internet address)
URSI Union radio-scientifique internationale
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