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  2. Automatic identification system - Wikipedia

    en.wikipedia.org/.../Automatic_identification_system

    An AIS-equipped system on board a ship presents the bearing and distance of nearby vessels in a radar-like display format. A graphical display of AIS data on board a ship. The automatic identification system (AIS) is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS).

  3. AISSat-1 - Wikipedia

    en.wikipedia.org/wiki/AISSat-1

    The Automatic Identification System was developed as a navigational aid for shipping traffic, initially primarily as a collision avoidance system. The system became mandatory most commercial ships from 2008. AIS was designed as a terrestrial system with AIS transponders operating on the very high frequency (VHF) range. In addition to ship-to ...

  4. Vessel monitoring system - Wikipedia

    en.wikipedia.org/wiki/Vessel_monitoring_system

    Automatic Identification SystemAIS is an IMO supported technology – provides low cost dual terrestrial and long-range satellite maritime data communications. It offers a base level of VMS functionality with global coverage at the lowest cost.

  5. Global Maritime Distress and Safety System - Wikipedia

    en.wikipedia.org/wiki/Global_Maritime_Distress...

    This new system, which the world's maritime nations are implementing, is based upon a combination of satellite and terrestrial radio services, and has changed international distress communications from being primarily ship-to-ship based to ship-to-shore (Rescue Coordination Center) based.

  6. Marine Exchange of Alaska - Wikipedia

    en.wikipedia.org/wiki/Marine_Exchange_of_Alaska

    The Marine Exchange of Alaska uses three systems to track vessels operating in Alaska and adjacent waters in Russia and Canada. These systems are: the terrestrial based network of Automated Identification System (AIS), a satellite AIS system provided by exactEarth [23] and use of various satellite transponders. In 2012 MXAK began adding weather ...

  7. Maritime identification digits - Wikipedia

    en.wikipedia.org/wiki/Maritime_identification_digits

    Maritime identification digits are used by radio communication facilities to identify their home country or base area in digital selective calling (DSC), Automatic Transmitter Identification System (ATIS), and Automatic identification system (AIS) messages as part of their Maritime Mobile Service Identities.

  8. Navigational aid - Wikipedia

    en.wikipedia.org/wiki/Navigational_aid

    AtoNs can be integrated with automatic identification system (AIS). AIS transmitted form an actual aid (buoy, lighthouse etc.) is termed a "real AIS AtoN". [11] If it is impractical to equip the AtoN with an AIS transponder an AIS shore station can be assigned to transmit AIS messages on behalf of the AtoN. This is known as a "synthetic ATON".

  9. Enhanced RADAR positioning - Wikipedia

    en.wikipedia.org/wiki/Enhanced_RADAR_positioning

    If a radar target - and thus the associated range / bearing of a conspicuous object - can be automatically correlated with the known position of that object in an automated manner, radar can be upgraded to an automated positioning system - or position verification system - and may ultimately function as a terrestrial back-up option for ...