High Accuracy Surface Modelling(HASM) constructed based on the fundamental theory of surface is more accurate than the classical methods in DEM construction.In order to give HASM a full evaluation
this paper introduced terrain representation error(Etr)
which was calculated by multi-resolution comparative analysis.Terrain representation model was built
which was regressed against resolution.The total DEM simulation error containing interpolation RMSE
Etr
etc.
is calculated in terms of error propagation theory.Canonical surface and Dong-Zhi-Yuan in Gansu province of China were selected to validate the efficiency of our methods.The results showed that the method presented in this paper can give a full evaluation of DEM error.HASM can construct more accurate and higher resolution DEM than the classical methods.
Radar Remote Sensing Laboratory, School of Earth Sciences and Information Physics, Central South University
Key Laboratory of Environmental Change and Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences & National Qinghai-Tibet Plateau Science Data Center
State Key Laboratory of Tibetan Plateau Earth System Science (LATPES), Institute of Tibetan Plateau Research, Chinese Academy of Sciences
Basic Surveying and Mapping Institute of Qinghai Province
School of Resources and Environment, University of Electronic Science and Technology of China