| Summary: | Digital Elevation Models (DEMs) are of fundamental importance to a wide range of geoscientific and environmental studies. This research addresses technical and theoretical issues involved in the construction of a large-scale DEM with multiple data sources. Enormous data volume, diverse data sources and different terrain types complicate the large-scale DEM generation process. To tackle technical difficulties and challenges, several new methods have been developed and some existing algorithms have been improved. Having these newly developed and extended methods and algorithms along with available GIS functions, we constructed a complete, consistent, and high-resolution DEM over the Antarctic by integrating a variety of cartographic and remotely sensed data. Pathfinder and Polar Oceans and Ice Sheets Programs, NASA.
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