基于WEB方式的电子海图技术研究

【作者】 丁宁；

【导师】 杨忠根； 许开宇；

【作者基本信息】 上海海事大学 ， 通信与信息系统， 2004， 硕士

【摘要】 电子海图显示与信息系统(ECDIS)被认为是继雷达／ARPA之后在船舶导航方面又一项伟大的技术革命。ECDIS不仅仅是简单的图形显示，它同时结合图形和文本数据构成一个非常有用的操作工具系统。作为一个自动决策辅助系统，能连续确定船舶相对于大陆的位置、标定目标的位置，辅助导航和避险。ECDIS作为实时的导航系统，它集中了航海人员需要显示和了解的各种信息。如今，讨论了若干年的“电子海图时代”早已悄然而至。随着各国官方电子航海图(ENC)逐步完备、标准ECDIS的出现以及工MO对ECDIS的认可，ECDIS势必取代沿用了几百年的传统纸海图。 国外在ECDIS方面已经做了大量的研究工作，技术资料不断更新。为了跟踪国际ECDIS系统的发展动态，以及掌握ECDIS技术的应用，本论文将研究ECDIS的相关标准S-57，WEB方式电子海图的实现技术，来建立一个ECDIS显示系统。该系统的研究为建设上海国际航运中心提供更好的服务，尤其在物流管理与控制、海上交通与运输等领域有着良好的应用前景。同时也为电子海图系统在Internet上的发展提供理论与技术基础。通过理论研究、分析，得出以下结论： 1．本论文对IHO S-57标准以及其封装标准ISO／IEC 8211进行了重点研究，尤其对S-57标准中的一些字段进行了重点分析，并详细介绍了ENC数据中点、线、面等基本信息的读取、处理。这对今后的产品开发意义重大，随着官方ENC数据库的不断完善，熟悉国际标准S-57是进行产品软件开发设计最重要的内容。 2．以ENC海图数据为基础搭建的ECDIS系统显示了海图中点、线、面等基本信息，对海图物标的属性进行了详细分析。并实现了基于B／S结构的WEB方式电子海图系统为不同终端提供海图底层信息。这对将来根据不同用户需要在海图上叠加其它气象、雷达信息，开发相关的技术和产品很有意义。 3．本论文研究设计的系统能为今后ECDIS相关技术研究提供实验平台。如在AIS与雷达目标融合问题的研究中，可以提供底层海图平台。更多还原

【Abstract】 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.更多还原