高分七号卫星影像制作1:2 000地形图精度分析  

Accuracy Analysis of 1:2 000 Topographic Mapping Using Gaofen-7 Satellite Imagery

作　　者：王一婷 Wang Yiting(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi'an,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安

出　　处：《科学技术创新》2025年第11期50-53,共4页Scientific and Technological Innovation

摘　　要：现阶段,高分七号卫星影像在基础测绘领域1:10000测图中应用普遍。本文结合铁路工程地形图制作的业务标准与规范,探索了基于高分七号卫星影像制作山地地区1:2000地形图的可行性,为高分七号在铁路勘察设计中的应用推广提供了参考作用。以既有的铁路工程项目为例,利用高分七号卫星影像数据进行空三加密并恢复立体模型,统计检查点的平面和高程中误差,并使用无人机航摄制作的1:2000图与立体模型进行套合对比,验证其测图精度和适应性,最后对立体模型的地物判读情况做了简要分析。结果表明,利用高分七号卫星影像制作山地地区1:2000地形图的精度基本可以满足规范要求,但仍需要外业实测进行地物要素补充。At present,Gaofen-7 satellite imagery has been widely applied in 1:10000 scale mapping for fundamental surveying and mapping.This study explores the feasibility of producing 1:2000 topographic maps in mountainous areas using Gaofen-7 satellite imagery by integrating operational standards and specifications for railway engineering topographic mapping,providing references for promoting its application in railway survey and design.Taking an existing railway engineering project as an example,aerial triangulation was performed using Gaofen-7 satellite imagery data to reconstruct stereoscopic models.The root mean square errors(RMSE)of checkpoints in planimetry and elevation were statistically analyzed.Comparative analysis was conducted by overlaying 1:2000 maps generated from UAV aerial photography with the stereoscopic models to verify mapping accuracy and adaptability.Finally,a brief analysis of feature interpretation in the stereoscopic models was performed.Results demonstrate that the accuracy of 1:2000 topographic maps in mountainous areas produced using Gaofen-7 satellite imagery generally meets specification requirements,though supplementation through field surveys remains necessary for complete feature annotation.

关 键 词：高分七号 卫星影像 铁路工程 山地 1:2000地形图 

分 类 号：V474[航空宇航科学与技术—飞行器设计] P284[天文地球—地图制图学与地理信息工程]