CHEN Chuanfa, YUE Tianxiang. DEM Error Surface Realization Based on Conditional Simulation[J]. Geomatics and Information Science of Wuhan University, 2010, 35(2): 197-200.
Citation: CHEN Chuanfa, YUE Tianxiang. DEM Error Surface Realization Based on Conditional Simulation[J]. Geomatics and Information Science of Wuhan University, 2010, 35(2): 197-200.

DEM Error Surface Realization Based on Conditional Simulation

Funds: 国家高新技术发展计划资助项目(2006AA12Z219);中国科学院知识创新工程资助项目(kzcx2-yw-429);国家杰出青年科学基金资助项目(40825003);国家科技支撑计划资助项目(2006BAC08B04)
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  • Received Date: December 15, 2009
  • Revised Date: December 15, 2009
  • Published Date: February 04, 2010
  • In order to overcome the limitations of RMSEs,we developed a scheme for DEM error surface construction based on conditional simulation(CS).A DEM error surface of Dongzhi tableland locate in Gansu province were comparatively constructed based on CS and ordinary Kriging(OK).Results indicate that OK has an obvious smooth effect,whereas CS can accurately represent the spatial fluctuation of DEM errors.DEM error has a more serious effect on slope accuracy in flat area than that in complex area;Results of water and soil loss level determination show that about 70.2% of grids are influenced by DEM errors.
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