无人机航测应用于沙漠地区1∶2000地形测图

Application of Aerial Survey by UAV in Surveying of 1∶2000 Topographic Map in Desert Area

无人机低空航测摄影技术已成为目前最重要的测绘手段,其具有快速获取信息、地面分辨率高的优势。本文根据沙漠地形地貌的特点,选取飞前布控野外地标点的方案来进行空三解算与正射纠正,提高了影像的几何精度。利用点云地形点采集方法便捷高效的生成等高线,使最终地形图的平面和高程精度达到了1∶2000地形图的要求,为无人机在沙漠地形测量中的应用提供了一套完整的解决方案。

Uav aerial photography technology has become the most important means of surveying,and has the advantages of quickly obtaining information and high ground resolution.In this paper,according to the characteristics of the desert topography,we select the method of Pre-flight control planning for aerotriangulation and ortho-rectification to improve the precision of aerial survey.Through the point cloud topography data to efficiently generate terrain contour,precision of plane and elevation of the final topographic map satisfies requirements of 1∶2000 topographic map.This provides application of drone in the survey of complicated topography of desert area with the complete solution.