Definitions

VHF Data Exchange System VDES, developed to meet the increasing need for data communication between maritime users and due to the significant rise in VHF data link load with the increasing use of AIS. VDES provides faster data transfer rates with greater integrity than current VHF data link systems.

Useful abbreviations

  • AIS Automatic Identification System
  • AIS 2.0 is realized by VDES
  • ASM Application Specific Message
  • BITE Functionality of a built‐in test equipment
  • DSC Digital Selective Calling
  • ECDIS Electronic Chart Display and Information System
  • e-NAV  e-Navigation
  • GMDSS Global Maritime Distress and Safety System
  • IMO International Maritime Organization
  • ITU International Telecommunications Union
  • kbps kilobits per second
  • kHz Kilohertz
  • LRIT Long Range Identification & Tracking
  • LPS Local Port Service
  • MAS Maritime Assistance Service
  • MASS Maritime Autonomous Surface Ships
  • NAS Navigation Assistance Service
  • NAVDAT Navigational Data (development on NAVDEX)
  • OSC On‐scene commander
  • PI Presentation Interface
  • PKI Public Key Infrastructure (security)
  • PNT Positioning Navigation Timing
  • PSK Phase‐Shift Keying
  • QPSK Quadrature Phase‐Shift Keying
  • RF Radio Frequency
  • RR Radio Regulations
  • RTCM Radio Technical Commission for Maritime Service
  • SAIS  Satellite AIS
  • SAT Satellite
  • SART Search and Rescue Transponder
  • SDR Software-Defined Radio 
  • SIP Strategic Implementation Plan
  • SOLAS Safety of Life at Sea
  • SOW Statement of Work
  • TBB Terrestrial Bulletin Board
  • TDMA time division multiple access
  • TMAS Telemedical Maritime Assistance Service
  • VDE-TER Terrestrial VDES (ship-to-ship and ship-to-shore)
  • VDE-SAT Satellite-based VDES (ship-to-satellite)
  • VDES VHF Data Exchange System
  • VDL VHF Data Link
  • VHF Very High Frequency (30MHz to 300 MHz)
  • VMS  Vessel Monitoring System
  • VOS Voluntary observing ship
  • VTM Vessel Traffic Management
  • WWRNS World‐wide Radio navigation System