摘要
本文旨在探讨利用异轨单片卫星影像提取高精度数字表面模型(DSM)的方法及其在工程领域的应用潜力。本文详细分析了卫星立体测图技术的优势及其在复杂地形测绘中的局限性,特别是气象条件和成像技术要求对数据采集周期的影响。基于异轨立体测量的基本原理,本文重点讨论了基高比对高程测量精度的影响以及有理函数模型(RPC)在区域网平差中的应用。实验选择中国新疆博尔塔拉蒙古自治州博乐市北天山山脉为研究区,比较了两组不同拍摄角度的卫星影像数据,并通过区域网平差方法评估其立体效果。实验结果显示,当侧摆角度为15°时,异轨单片影像能满足1∶10000比例尺地形图的精度标准。
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.
作者
李潇屹
LI Xiaoyi(China Consulting Data Company Limited,Beijing 100097,China;Research and Development Center of Spatial Information Application and Disaster Prevention and Mitigation Technology in Transportation Industry,Beijing 100097,China)
出处
《北京测绘》
2025年第7期947-952,共6页
Beijing Surveying and Mapping
基金
科技部创新工作方法专项(2020IM020500)。
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
satellite stereogrammetry
cross-track single-image data
digital surface model(DSM)
base-to-height ratio
rational polynomial coefficients(RPC)
regional network adjustment
作者简介
李潇屹(1991-),男,安徽合肥人,硕士,工程师,从事摄影测量与遥感及工程测量工作。E-mail:526508789@qq.com。
