稀少控制点条件下卫星影像在高原地区定位精度分析  

Analysis of Positioning Accuracy of Satellite Image in Plateau Region with Few Control Points

作　　者：杨骁 YANG Xiao(Sichuan Transportation Survey and Design Institute Company,Ltd.,Chengdu 610017,China)

机构地区：[1]四川省交通勘察设计研究院有限公司,成都610017

出　　处：《价值工程》2024年第17期110-112,共3页Value Engineering

摘　　要：研究了稀少控制点条件下的高分辨率卫星影像在高原地区的定位精度。通过采用多种辅组平差方案与像控点布设方案的组合优化有理函数模型,并使用优化后的模型解算卫星影像立体像对,对比分析解算后影像特征点与对应特征点实际位置偏差,找出一种适于高原地区1:10000大面积测图的组合方案。结果表明当像控点分布在影像四角及中心同时采用二维仿射变换改正有理函数模型的平差方案定位精度最佳,为利用高分辨率卫星影像在高原地区测图提供了参考。The problem of high resolution satellite image positioning accuracy in the plateau area with sparse control points is studied.The reasonable function model is optimized by using a variety of auxiliary group adjustment schemes and image control point layout schemes.The optimized model is used to solve the stereo image pairs of satellite images,and the difference between the calculated image feature points and the corresponding actual position of feature points is compared and analyzed,so as to find a combination scheme suitable for 1:10000 large area mapping in the plateau area.

关 键 词：卫星影像 有理函数模型 定位精度 高原地区 

分 类 号：P236[天文地球—摄影测量与遥感]