基于IHO S-57标准的海图数据库建设

IHOS-57标准是海洋地理信息的国际数据交换标准,本文从该标准的由来、现状、发展和关键点,较详细地分析了S-57的标准;从分析S-57标准与现行国家海图数据库的差异入手,给出了按S-57标准建设我国海图数据库的理论模型、数据模型、实施方法和具体数据结构设计上的实例。最后指出落实S-57标准,从面向制图的数据库到面向地理实体的数据库转换,是信息社会发展的必然。

The Creation of Chart Database Based on the IHO S-57 Transfer Standard

The IHO S-57 standard is an international digital data transfer or exchange standard for hydrographic information. In this paper, all the aspects of the S-57 standard are analyzed in detail through discussing on the standard′s origin, status, development and key points. In the following, according to S-57 standard it has given out the theoretical model, data model, implementation method and the instances of database structure for creation of chart database. It is designed through analyzing the difference between the S-57 standard and existing national chart database. Finally, it points out that the implementation of the S-57 standard is the necessity for the development of the information society and it is also the necessity for the transition from the Charting-Oriented database to the Geographic-Reality-Oriented database.