Electronic Chart Based On The Web Study

The ECDIS is considered as a great technical revolution in vessels' navigation field after radar / ARPA. The ECDIS is not only a simple displaying system, but also an operation tool system combining graph and text. As an automatic decision-making assistance system, it can decide ship position relative to the continent, mark target position, assist navigation, and avoid the danger. Also as a real-time navigation system, it concentrated various information needed to be displayed and understood by seaman. Now, the ECDIS that discussed some years have already come quietly. Along with the official Electronic Navigation Chart (ENC) gradually getting mature, emergency of standard ECDIS and authorization of ECDIS by IMO, ECDIS will definitely replace traditional paper chart using hundreds of years.The abroad has already done a great deal of research work in ECDIS and updated technical materials. In order to keep up with the international ECDIS's developing trends and master the applications of ECDIS technology, this article researches ECDIS related to standard S-57,electronic chart realizing technique in WEB mode, building an ECDIS displaying system .The research on this system will provide better service for construction of Shanghai International Shipping Center, and have great application prospects especially in such fields as logistics management and control, maritime traffic and transportation and so on. Meanwhile it can supply theory and technique foundations for internet development of ECDIS. Through theory research and analysis, we can draw the following conclusion:1. Research of this article focuses on IHO S-57 standard and packed standard ISO/IEC 8211, especially analyzes mainly on certain fields in S-57 standard, and introduces details in reading and processing basic information of point, line, face from ENC data. It has significant meaning for product development in future. Along with the continuously perfecting of official ENC database, familiar with international standard S-57 is an important part to develop software product.2. Basing on ENC chart data, ECDIS displays basic information of point, line, face an chart, and analyzes properties of chart object in details .Basing on WEB mode of B/S construction, electronic chart system realizes providing chart understratum information for all kinds of terminal. It will be meaningful for adding other weather and radar information onto chart according to different users' needs and developing relevant technique and product. II3. This article designed a system that can provide a testing platform for researches which are relative to ECDIS latter. For example, in the research of amalgamation problem between AIS and radar target, it can provide understratum chart platform.