A new quality validation of global digital elevation models freely available in China

  title={A new quality validation of global digital elevation models freely available in China},
  author={Peng Li and Zhenhong Li and Jan-Peter Muller and Chuang Shi and Jing-nan Liu},
  journal={Survey Review},
  pages={409 - 420}
Global Digital Elevation Models (DEMs) are widely used in the study of natural hazards and environmental change on a global scale. This paper focuses on validation of the most widely used and newly released global DEMs (SRTM v4.1, NASA SRTM v3, SRTMX and ASTER GDEM v2) in China. Authors use independent and precise ground GPS observations to assess their absolute accuracies. The SRTMX DEM performs best with a height RMSE of 9.7 m, while the RMSE of the ASTER GDEM2 is slightly better than that of… 
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