摘要
针对GF-4卫星静止轨道、高时间分辨率、面阵成像的特点,本文通过构建严格成像模型,实现了GF-4卫星影像几何定位仿真模拟。在对初始仿真定位结果进行分析后,建立了几何外检校模型,利用在轨真实成像影像和SRTM DEM对严格成像模型进行外检校处理,同时探讨了仿真控制点分布对相机姿态角常差检校的影响。试验结果表明,经过外检校处理后,构建的仿真模型能够有效模拟GF-4卫星在轨真实影像几何定位误差。
Through integrating the stationary orbit,high time resolution and area-array image characteristics of GF-4 satellite,building the rigorous sensor model,this paper realizes the geo-positioning simulation of GF-4 satellite. After analyzing the initial geometric simulation results,the geometric exterior calibration model is proposed. Then our research uses on-orbit real images and SRTM DEM to fulfill the geometric exterior calibration of the rigorous sensor model and discusses the influence of simulation control points（ SCPs）distribution on camera angular systematic errors. The experiment results show the geometric simulation model can effectively simulate the geo-positioning errors of the on-orbit real GF-4 image after geometric exterior calibration.
作者
韩杰
谢勇
HAN Jie;XIE Yong(School of Urban-rural Planning and Architecture, Xuchang University, Xuchang 461000,China;School of Geography and Remote Sensing, Nanjing University of Information Science ＆ Technology, Nanjing 210044,China)
出处
《测绘通报》
CSCD
北大核心
2018年第4期23-27,共5页
Bulletin of Surveying and Mapping
基金
河南省科技攻关项目(172102210463)
国家自然科学基金(41671345)
高分辨率对地观测系统共性指南(50-Y20A07-0508-15/16)
国家重点研发计划(2016YFB0502500)
关键词
GF-4
几何定位仿真
外检校
GF-4
geo-positioning simulation
exterior calibration
