数字地面模型原理及其在线路辅助设计中的应用

摘要

This paper introduces the concept, characteristics, functions, and data source of DTM, analyzes the principle of DTM, and describes the application of DTM in auxiliary route design. As a result, it achieves better economic and technological benefit.%详细介绍了数字地面模型（DTM）的概念、特点、作用及数据来源，进而分析了数字地面模型的原理，并阐述了DTM在线路辅助设计中的应用，取得了较好的经济效益和技术效益。