DEM构建中的断裂线处理
Fault Line Management of DEM Construction
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摘要: 根据断裂线在地表曲面中的数学性质,将断裂线分为硬断裂线和软断裂线,处理软断裂线时采用修改采样点权值的方法,处理硬断裂线时采用直接划分两侧采样点的方法。实验结果表明,该方法思路简单、容易实现,计算结果精度较高。Abstract: DEM is one of the most important geospatial data.In the process of DEM construction,the fault line dealt approach affects DEM accuracy and the effectiveness of DEM-based geographic analysis results.Based on the mathematical character of fault line on the ground surface,fault lines are divided into hard and soft lines.Soft fault line is managed by modifying the weight value of sample point.Hand fault line is managed by directly dividing the sample points on both side of the line.The experiments show that this method is simple and easy to implement,and the calculation results have higher accuracy.
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