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中文摘要：
针对网格DEM处理地形断裂线等特殊地形时存在的问题,结合杨赤中法构造DEM的过程,提出了地形断裂线之上及其两侧的待平均点（待估点）和已知离散点的判断及处理算法。利用了矢量叉积进行顺时针、逆时针、高点、低点、线段跨立的判断,通过实例验证了该方法的正确性和可行性。
英文摘要：
According to the problems in dealing with the rupture lines by ridding DFM,and the process of DEM conformation in Yand Chizhong Method,the estimation and disposal arithmetic of unknown points and known discrete points above the rupture lines and on both sides are put forward in this article.Clockwise direction,anticlockwise direction,high points,low points and line bestriding are examined by vector cross product.Experiments prove new arithmetic method to be correct and feasible.
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