Automatic Identification System

1
AutomaticIdentification System
2
AIS Technology
The Automatic Identification System is designed
for autonomous information exchange between
shipship and shipshore-based station. This
information includes ships name, location, speed
and course over ground. Transas transponders
also have a function which allows operator to
send binary and text messages from ship to ship,
from ship to shore and v.v. The exchange of
information is realized through two VHF
channels. The transponders are working in
broadcast mode on shared channels, thus all
transponder equipped vessels can see each other.
This exchange of information is performed fully
autonomously (without any involvement from a
controlling station). The broadcast data is
received both by transponder equipped vessels
and shore based transponders.
STDMA Datalink
3
AIS Technology
The transponders offered by Transas Marine
include functionality in accordance with the
Technical Characteristics for a Universal
Shipborne Automatic Identification System,
approved by ITU (ITU-R M.1371). This means
communication over two parallel VHF channels,
operation at the designated AIS 1 and AIS 2
channels and radio transceiver approval in
accordance with I-ETS 300 113.
4
On Board Transponder
By installing a Universal AIS transponder on a
ship together with ECS or ECDIS system and other
sensors, surrounding ships equipped with a
similar Universal AIS transponder can be
monitored in real time.
The available voyage related information
includes Destination Estimated Time of
Arrival Ships draught Type of cargo
5
Navi-Harbour AIS Display
6
Base Station Transponder
(SBT1000 Transponder)
The base station transponder is a standard 19
rack module that includes a standard mobile
transponder, power supply converter and DGPS
reference station/beacon receiver. With an
installed reference station/beacon receiver the
base station transponder can broadcast different
corrections to transponders operating within VHF
range. This transponder is designed for land
installations, both for stand-alone units and
network configurations.
7
LAN
CONTROL CENTRE
8
Advantages Of Using AIS
- cost-effective solution - suitable for small
ports - IMO compliant - easy to install -
compact design - could be expanded up to full
range VTMS - easy to upgrade