三维GIS技术在断面测量中的应用

Application of 3D GIS technology in section collection

本文针对常规基于二维矢量数据和高分辨率影像的断面采集方式在直观性、数据源等方面的不足,引入三维GIS技术,利用相关基础地理数据构建三维地理环境,设计了一套三维地理环境下的断面数据采集技术流程,并在此基础上研制了一个软件平台。实际工程应用显示,该平台不仅可以满足铁路勘测设计应用,还具有可视化、批量化断面采集和检查能力,能够提高断面采集工作效率,减轻内业工作强度。

Considering that the conventional way of section collection based on two-dimensional vector data and images with high resolution is not intuitive enough and restricted by data source, 3D GIS technology was brought in the paper, and the 3D geographical environment was built by related geographical data source. On this basis, a set of technical process was designed and the 3D section collection software was developed. The practical engineering application showed that the software could not only feed the needs of rail- way survey and design, but also have visualized, batched section collection and examination ability, which would improve the work effi- ciency of section collection, and reduce the working strength of interior work.