Research On The Application Of AIS Used In VTS

The traditional RADAR was once a milestone in the maritime monitoring system. Along with the increase of world shipping and with shipping developed toward large-scale and high speed, the important water course of the world seems more and more crowded and the maritime traffic accident frequently takes place. These have caused the enormous threat for security and marine environment. For strengthening maritime traffic controls, marine pollution monitor and for guaranteeing the security of shipping, the information exchange among the ships and shores is growing with each passing day, and the identification of ships is then getting much more important. But due to the limitations on traditional radar's operation principle, so that it is determined that the information it can offer be only of very small quantity and even be wrong. Obviously, the traditional radar has already been difficult to meet the demand for contemporary navigation.Then, AIS arises at the historic moment relying on the current communication technology and technology of computer. And since 1992, the formal international discussion on AIS discusses, so far during the short more than 10 years, AIS has gotten the development at full speed. And AIS's development must bring far-reachinginfluence even changes to the development of VTS.Firstly in this paper, the development course of AIS and VTS with their basic operation principles are introduced briefly, and also the communication principle of STDMA is analyzed. Then, based on these principles, regarding AIS related international standards set up by IMO, IEC and ITU as basis, the application of AIS to VTS with the performance were profoundly studied. And the main research contents can be concluded as follows:1) the throughput of AIS used in VTS;2) AIS's monitoring capacity and radius as used in VTS.