navigation acronyms, abbreviations and definitions - International ...

RAM random access memory
RAM reliability and maintainability
RAMARK radar marker beacon
RAMS reliability availability, maintainability and safety
random error That error which can be predicted only on a statistical basis (IMO).
Rapid/Mocha Rapid Climate Change/Meridional Overturning Circulation and
Heatflux Array) project
RAR real aperture radar
RAS radar advisory service (ATC)
RAS Radio Astronomy Service (of allocated spectrum bands)
RAS rectified airspeed
RAS regional augmentation system
RAS replenishment at sea
RAT Risk Awareness Tool (FSF)
RAVI Netherlands Council for Geographic Information
RBDS radio broadcast data system
RBI relative bearing indicator
RBN radio beacon
RCC real to complex convertor (signal processing)
RCC Rescue Co-ordination Centre
RCD Recreational Craft Directive (EU)
RCDS raster chart display system
RCL runway centre line
RCM reliability centred maintenance
RCP required communications performance
RCS radar cross-section (normally givien in square metres)
RCVR receiver (or Rx)
RD requirements document/definition
RDA Regional Development Agency (UK)
RDBMS Relational Database Management System
RDC Research & Development Center (USCG)
RDF radio direction find(er)(ing)
RDS Radio Data System
Sub-carrier on FM broadcasts carrying data, which may include DGPS
corrections and TMC.
RDS-EON Radio Data System - Enhanced Other Networks
Digital traffic messages carried by RDS.
RDS-TMC Radio Data System - Traffic Message Channel
Digital traffic messages carried by RDS.
RDSS Radio Determination Satellite Service
RDT&E research, development, test and evaluation
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