This paper concludes the note by putting value conditions and self - completed measured for AIS system.
As defined by wikipedia encyclopedia Automatic Identification System (AIS) is a system used by ships and vessel traffic systems (VTS) principally for identification of vessels at sea. AIS helps to resolve the difficulty of identifying ships when not in sight (e.g. at night, in radar blind arcs or shadows or at distance) by providing a means for ships to exchange ID, position, course, speed and other ship data with all other nearby ships and VTS stations (Ref-1). AIS development started in the year 1997 with the recommendation of IMO to establish a performance recommendation for a wordwide system. It works by integrating a standardized Very High Frequency (VHF)1 transponder system with a Global Positioning System (GPS)2 receiver and other navigational equipment on board ship (Gyro compass, Rate of turn indicator, etc.). This system captures and reflect the datato all the solas system implemented places and provides a quick, reliable and accurate information to the management which helps in avoiding any kind of mishappen. AIS is revolutionizing observation and control of shipping through increased maritime safety and through the use of the information generated that enhance the management of shipping operations.
US Coast Guard Navigation Center , http://www.navcen.uscg.gov/enav/ais/how_AIS_works.htm, July 12th 2005
The Purpose of automatic identification systems are
To provide a means for ships to exchange ID, position, course, speed and other ship data with all other nearby ships and VTS stations
to resolve the difficulty of identifying ships when not in sight
to give information to the authorities of Marine Costal Board about the routes of cargos and ships
to rescue the centers and costal harbors authorities acting like a task force of costal police
to increase the situational awareness
to decrease the workload for authorities those who are monitoring and controlling the costal and offshore waterways.
The Development and Future of AIS
In the year 1997 International Maritime Organization (IMO) has recommended for a worldwide AIS development. With the IMO order the Coast Guard Research and Development Center (R&DC)3 in the year 1998, participated in the development of AIS technology internationally. It developed tools like computer simulation, to assess the capability and capacity of a network of AIS devices for AIS with the International Electro-technical Commission (IEC) 4, International Telecommunications Union (ITU)5, National Marine Electronics Association (NMEA)6, etc. A long record of supplying infrastructure, GPS reference networks and EGNOS7 monitoring systems are the basic element or equipment for AIS development (Ref-2). The design and development of AIS depend on the standards and recommendations of the shipping boards.
For the reasons like safety, efficiency, prevention and response to