高分辨率遥感卫星立体影像制作地形图在海外铁路勘测设计中的应用

摘要

基于海外铁路项目勘测设计中面临的地形基础资料奇缺及获取困难等问题，应用高分辨率遥感卫星立体影像制作地形图技术可以解决。结合海外铁路工程实例，对高分辨率遥感卫星立体影像立体定位、测绘制图、应用效果等进行分析和介绍，证明其精度和功能可以满足铁路勘测设计1∶2000地形图要求，该项技术在海外项目勘测设计中值得推广使用。%Considering the troubles of difficult to obtain topographic data in oversea railway survey and design,topographic maps from stereo images of high resolution remote sensing satellites can solve this problem.Based on the overseas railway project examples,analysis and introductions in this article including location of stereo images of high resolution remote sensing satellites,stereo image mapping and application effects,the facts proved that the accuracy and function of this tech-nique could meet the requirements of railway survey and design of 1∶2 000 topographic map,it was worth using widely in survey and design in overseas projects.