274
14 Pseudo-Ranging Radio Navigation Systems
One of the ways to eliminate these shortcomings is the use of AIS.
AIS performs the following functions:
• automatic identification of ships;
• self-organization of the system and control of access to radio channels;
• reception of data via radio channel from other ships and coastal centers;
• transfer of own data to the radio channel for use by other ships and coastal centers;
• saving static data intended for automatic transmission to the radio channel;
• delivery of data received from the radio channel from other AIS objects for display
in the data presentation device in AIS;
• determination of coordinates and parameters of vessel movement using the built-in
GNSS receiver;
• receiving differential GNSS corrections from a GNSS control and correcting
station or from a receiver of differential corrections of radio beacon channel and
transmitting it via the AIS channel (base station);
• reception and transmission of data on the vessel’s coordinates and parameters of
its movement (and pitching angles, if available) from an external source;
• receiving static, additional dynamic data and binary messages for transmission to
the radio channel from the AIS data presentation (storage) device;
• assignment (by coastal AIS) of the corresponding operating modes to ship and
coastal stations, including assignment of areas, frequencies, radiation power, slots,
periods of reports and the number of its repetitions.
• switching on/off the reserve coastal stations (repeaters) of AIS;
• output of information on the AIS state (to the main, e.g., ECDIS, auxiliary, e.g.,
pilot AIS, displays of the Control and Display Unit (CDU));
• outputs on CDU displays, calculated by the coordinates of ships.
The list of information transmitted by AIS is presented in Table 14.10.
In addition to this information, the following can be transmitted or received via the
AIS channel: short text messages related to the navigational safety of navigation; ship
collision prevention; meteorological conditions; interaction of ships and helicopters
performing an operation to search and rescue a distressed ship; the ship’s route, and
can also be transmitted differential corrections of GLONASS and GPS, increasing
the accuracy of determining the coordinates of the vessel to units of meters.
The use of this information on board the vessel should significantly increase the
safety of navigation and maximally exclude ship collisions.
14 Pseudo-Ranging Radio Navigation Systems
One of the ways to eliminate these shortcomings is the use of AIS.
AIS performs the following functions:
• automatic identification of ships;
• self-organization of the system and control of access to radio channels;
• reception of data via radio channel from other ships and coastal centers;
• transfer of own data to the radio channel for use by other ships and coastal centers;
• saving static data intended for automatic transmission to the radio channel;
• delivery of data received from the radio channel from other AIS objects for display
in the data presentation device in AIS;
• determination of coordinates and parameters of vessel movement using the built-in
GNSS receiver;
• receiving differential GNSS corrections from a GNSS control and correcting
station or from a receiver of differential corrections of radio beacon channel and
transmitting it via the AIS channel (base station);
• reception and transmission of data on the vessel’s coordinates and parameters of
its movement (and pitching angles, if available) from an external source;
• receiving static, additional dynamic data and binary messages for transmission to
the radio channel from the AIS data presentation (storage) device;
• assignment (by coastal AIS) of the corresponding operating modes to ship and
coastal stations, including assignment of areas, frequencies, radiation power, slots,
periods of reports and the number of its repetitions.
• switching on/off the reserve coastal stations (repeaters) of AIS;
• output of information on the AIS state (to the main, e.g., ECDIS, auxiliary, e.g.,
pilot AIS, displays of the Control and Display Unit (CDU));
• outputs on CDU displays, calculated by the coordinates of ships.
The list of information transmitted by AIS is presented in Table 14.10.
In addition to this information, the following can be transmitted or received via the
AIS channel: short text messages related to the navigational safety of navigation; ship
collision prevention; meteorological conditions; interaction of ships and helicopters
performing an operation to search and rescue a distressed ship; the ship’s route, and
can also be transmitted differential corrections of GLONASS and GPS, increasing
the accuracy of determining the coordinates of the vessel to units of meters.
The use of this information on board the vessel should significantly increase the
safety of navigation and maximally exclude ship collisions.