文章基本信息

标题：The scheme for the database building and updating of 1 10 000 digital elevation models
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作者：Zhu Qing ; Li Zhilin ; Gong Jianya 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2000
卷号：3
期号：2
页码：19-25
DOI：10.1007/BF02826619
出版社：Taylor and Francis Ltd
摘要：The National Bureau of Surveying and Mapping of China has planned to speed up the development of spatial data infrastructure (SDI) in the coming few years. This SDI consists of four types of digital products, i. e., digital orthophotos, digital elevation models, digital line graphs and digital raster graphs. For the DEM, a scheme for the database building and updating of 1 10 000 digital elevation models has been proposed and some experimental tests have also been accomplished. This paper describes the theoretical (and/or technical) background and reports some of the experimental results to support the scheme. Various aspects of the scheme such as accuracy, data sources, data sampling spatial resolution, terrain modeling, data organization, etc are discussed.
关键词：geospatial data; DEM; photogrammetric sampling; cartographic digitization; specification