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《Science of Surveying and Mapping》 2004-03
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Preliminary study on specification of basic terrain-unit dataset

WANG Hong, WANG Jun(Chinese Academy of Surveying and Mapping, Beijing 100039, China)  
This paper discussed the criteria for selecting the terrain-unit, that portion of land surface, which contains a set of ground features same in the unit and different from the adjacent units. In the definition a feasible terrain-unit and leading to specification on the dataset, various analyses and tests were carry out,mainly based on raster DEM dataset, and with the most functions of spatial analysis , such as the neighborhood statistic, in the ARCGIS platform. The advantage and limitation of the technique related with statistical analysis on the area and classification of the terrain-unit were explicated with map, chart and graph. As the result, the specification of the dataset includes the content of the appropriate size of grid-cell, terrain-unit cell,and the type classification on the morphological relief, elevation, and slope.
【Fund】: 国家测绘局基础测绘项目予专题(14601402024-01-06-01)
【CateGory Index】: P28
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