战场地形信息基于数字摄影测量快速获取。
The quickly achieving battlefield landform information is based on digital Photogrammetry.
和灭实拟技巧的收铺，地球空间数据获取脚腕如摄影测量、激光扫描等技巧突飞猛入，越来越长的城市开初建设本人的数字城市。
With the development of virtual technology and three-dimensional geospatial data collection technology, more and more cities began to build their own digital city.
系统采用三角形摄影测量原理，借助线型激光和高速数字像机获取钢轨断面轮廓信息；
The system utilizes the triangulation photogrammetry, and obtains rail profile with the help of line-type laser and high-speed digital camera.
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