基于无人机遥感数据的长水机场地形变化分析

Terrain Changes Analysis of Changshui Airport Based on UAV Remote Sensing Data

利用多期无人机航空影像提取DEM数据,对昆明长水国际机场建设前后的地形变化进行了定量化分析。通过对机场无人机遥感数据进行空三计算得到DEM数据,利用无人机影像提取建筑物的情况,并消除建筑物对DEM数据造成的起伏影响,再利用GIS对建设前后的机场地形进行了空间连续的工程填挖土石方量分析和坡度变化分析。结果表明,机场最终填挖土石方总量为2.00×108 m3,与工程实测设计预算的1.9×108 m3相符,场址地形发生了剧烈的削高填低变化,坡度明显降低,0°~6°坡度由占研究区总面积的49.3%增加至73.4%;6°~25°坡度由47.3%减少至24.2%,地形趋于平缓,为工程动态监测、绿化设计布置等管理工作提供技术和数据支撑。

This paper used multi-stage UAV remote sensing images to extracted DEM data, and quantitatively analyzed the terrain changes of Kunming Changshui international airport. The paper extracted information of buildings by UAV and eliminated the impact of buildings on terrain changes, and analyzed cut and fill earthwork and slop changes through GIS. The results showed that the final cut and fill earthwork was 2.0×108m3 and consistent with the engineering design budget of 1.9×108m3, slop significantly lower, slop of 0°~ 6° increased from 49.3% to 73.4%, slop of 6°~25° decreased from 47.3% to 24.2%, terrain became fl at.