【作者】 武瑞宏；

【导师】 张献州； 任晓春；

【作者基本信息】 西南交通大学 ， 测绘工程， 2007， 硕士

【摘要】 数字高程模型及基于数字高程模型提取横断面的技术是连接航测和设计之间的桥梁，是勘测设计一体化的纽带，它将航测、数字高程模型和线路CAD设计紧密结合成为一个有机的系统。目前对于航测方法获取的数字高程模型精度及基于航测数字高程模型提取的横断面精度缺乏了解，妨碍了数字高程模型及横断面的进一步应用，成为制约勘察设计一体化的瓶颈之一。本文对数字高程模型的概念、应用、高精度数字高程模型的获取方法、线路横断面的获取方法进行了较为详细的论述；重点对航测生产中同时生产数字线划图和数字高程模型的方法、基于航测DEM提取的横断面理论精度进行了详细的推算和分析；开发了横断面提取软件Drawprofile，实现了基于数字高程模型提取横断面的技术，并将提取的横断面数据与野外实测横断面数据做了对比分析，客观得出了基于航测DEM提取横断面的精度。论文还对基于航测DEM提取横断面生产的质量控制措施、精度提高的方法及其应用范围做了详细的总结。本文的研究结论对促进基于航测DEM提取的线路横断面的应用，减少横断面测量外业工作量，具有一定的实用参考价值。更多还原

【Abstract】 Photogrammetric DEM and cross-section based on the DEM are the bridges linking the photogrammetry and design, and also are the tie of integration of Survey and Design, combining the Photogrammetry, DEM and route CAD into an organic system. At present, trials and investigations on the precision of photogrammetric DEM and cross-section are few, and it hinder the further application of photogrammetric DEM and cross-section and become a bottleneck influencing the development of integration of Survey and Design.The thesis discusses the concept and application of DEM and acquiring methods of high precision DEM and route cross-section in details, detailedly describe the simultaneous acquiring methods of DLG and DEM, and also deduces and analyses the academic precision of cross-section based on photogrammetric DEM . Drawprofile module developed implements the cross-section extracting technique from photogrammetric DEM, and by the comparision and analysis of cross-sections from the photogrammetric DEM and field data collected, precision of cross-section based on the photogrammetric DEM is achieved. The thesis also describes the qulity-control measures, precision-improving methods and application range of cross-section based on photogrammetric DEM.The results that the thesis obtained offers certain reference and practical value for prompting application of cross-section based on the photogrammetric DEM and reducing field work.更多还原