Abstract: Digital Elevation Models (DEMs) of Antarctic ice sheet play a very important role in Antarctic research, and the main data source for constructing an Antarctic DEM is satellite altimetry.Among these data, ERS-1/GM has a complementary relationship with ICESAT in spatial resolution and accuracy, and the premise to obtain high resolution and high accuracy is a combination of these two types of data. The article found an approach to combine the data, which was used to construct the Antarctic DEM. Finally, ICESAT discrete data and RAMP / DEM v2 was used to evaluate the accuracy of the integrated DEM, and the results show that the elevation accuracy of integrated DEM is about 4m.  

Key words: Antarctic ice sheet, DEM, ERS-1, ICESAT, RAMP/DEM