Ais In The Vts System

Making a comprehensive survey of the developing shipping technology history, there are mainly two ways to increase the security of the vessels' navigating in the sea recently: one is depending on the VTS when ships arrive at harbors; the other one is depending on the rules of vessel collision resolution when ships navigating in the sea. Radar is regarded as the mainly observation equipment of the two approaches which is used to supervise and identify ships. Although the function of radar keeping on being improved, its disadvantages are still exist. With the rapid developing of technology of communication and computers, AIS is born to live and will be stronger and stronger.AIS has provided the unprecedented vessels tag information and high real time and accurate parameter of ships navigating. It can provide more information, better real time and stronger anit-jamming than radar, also it has other virtues such as transmitting over obstacles. In a word, AIS can bring the revolutionary progress to the supervision of the vessels navigating in the sea.In foreign countries, many research works have been taken on the AIS technology, so the criterion of AIS has been updated continually. But in our nation, research of AIS is poor and the relevant information is lack. In order to keep up with the international AIS's developing trends and master the applications of AIS technology, the article will reveal how to apply AIS technology to the VTS system, then put forward the project of AlS-based VTS. This article will also discuss a testing simulation system, which will become a part of preparative works for the latter productions. My article include two parts:1 , The first is focusing on the format, characteristics and transmission of the information of AIS. Especially, it makes a detailed discussion about how to use the AIS technology in VTS systems, and put forward the idea that AIS can be a complement of VTS systems: it concretely proposes how to build up AIS base station network and how to use both of AIS and Radar data to realize the perfect vessel identification and track.2, The second is focusing on an AIS simulation system, which is composed of two parts: one makes a automatic collection of the AIS information; and the other one simulates how to show the information on the VTS display. By means of the simulation it can prove the advantage of the AIS information as the complementarity to the Radar information.