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介绍了数字地面模型(DTM,简称数模)的产生、建立过程,结合山西省某高速公路中对数字地面横型(DTM)的使用情况,对数模采集的数据与传统的测量方法进行了比较与分析,得出了一些结论,同时也指出了在高速公路勘察设计中使用数字地面模型(DTM)存在的问题及使用注意事项。
This paper introduces the generation and establishment of Digital Terrain Model (DTM), and compares the use of Digital Terrain (DTM) in an expressway in Shanxi province with the traditional measurement methods Some conclusions are drawn and the problems existing in the use of digital terrain model (DTM) in expressway survey and design and the precautions for their use are also pointed out.