北京测绘2025，Vol.39Issue(7)：947-952,6.DOI:10.19580/j.cnki.1007-3000.2025.07.003
单片异轨卫星影像的DSM提取技术研究
DSM extraction technology from single-track,cross-track satellite imagery
摘要
Abstract
This paper aims to explore methods for extracting high-precision digital surface model(DSM)from single-track,cross-track satellite imagery and its potential applications in the engineering field.The paper provided a detailed analysis of the advantages of satellite stereogrammetry technology and its limitations in complex terrain surveying,particularly the impact of meteorological conditions and imaging technology requirements on the data acquisition cycle.Based on the basic principles of cross-track stereoscopic measurement,this paper focused on discussing the impact of base-to-height ratio on elevation measurement accuracy and the application of rational polynomial coefficients(RPC)in regional network adjustment.The experimental area is located in the northern Tianshan Mountains of Bole City,Bortala Mongol Autonomous Prefecture,Xinjiang,China.Two sets of satellite image data taken from different angles were compared,and the stereoscopic effect was evaluated using regional network adjustment methods.The experimental results show that when the roll angle is 15°,single-track cross-track imagery can meet the accuracy standards for topographic maps at a 1∶10,000 scale.关键词
卫星立体测图/异轨单片数据/数字表面模型(DSM)/基高比/有理函数模型(RPC)/区域网平差Key words
satellite stereogrammetry/cross-track single-image data/digital surface model(DSM)/base-to-height ratio/rational polynomial coefficients(RPC)/regional network adjustment分类
天文与地球科学引用本文复制引用
李潇屹..单片异轨卫星影像的DSM提取技术研究[J].北京测绘,2025,39(7):947-952,6.基金项目
科技部创新工作方法专项(2020IM020500) （2020IM020500）
