海岸带地区海图与地形图数据集成问题研究

he coastal areas has taken on new urgency in recent years due to economic development in China. This importance of coastal zone management brings into focus the inherent separation of land and marine spatial data management. During the last several decades, due to the difference of surverying and mapping in the methodology, techniques, datum and time, there exist all kinds of topographic maps and nautical charts with inconsistent map projection, plane data datum, height/depth data datum. Such an inconsistent results in the unseamless data frame and envetually affects the coastal areas suverying and mapping, data analysis. In this paper, the integration methodlogy of topographic maps and nautical charts in coastal areas are focused. Firstly, the reasons of the inconsistency of topographic maps and nautical charts are introduced. Secondly, the translation and unification methods of the plane/projection topographic elements are analyed, including the unification of coordinate system and georeferced datam. Thirdly, the translation methods of the height/depth data datum are indicated, including the standardization of height/depth datam and the Tide correction. Finally, a concise summary of data integration are gived.