ZHAO Mu dan, CHEN Zheng jiang, JIN Rui. A Math-simulation on Accuracy of Gradient Extracted from DEMs[J]. Bulletin of Soiland Water Conservation, 2002, 21(3): 55-57.
ZHAO Mu dan, CHEN Zheng jiang, JIN Rui. A Math-simulation on Accuracy of Gradient Extracted from DEMs[J]. Bulletin of Soiland Water Conservation, 2002, 21(3): 55-57.DOI:
the environment reconst ruction project in the loess plateau area needs the support of the accurate slope gradient. The slope data are mainly detained from the digital elevation model. Four different test areas are chosen to learn the estimation way of the slope gradient from DEM and set up a slope accuracy simulation math-model by assuming 1∶10000 scale
5mreso lution DEM as the basis
and applying relation analysis
regression analysis. This model was testified to be available in application
which also present the important way to set up the general model of the national scale