摘要
几何定位精度是衡量卫星影像几何质量的一个重要参数。针对高分四号(GF-4)卫星静止轨道面阵成像特点,以GoogleEarth为参考基准,对在轨测试前后GF-4卫星多光谱相机影像几何定位精度进行评价。重点分析了影像几何定位精度与太阳方位角/高度角和卫星方位角/天顶角/姿态角之间的关系,同时探讨了卫星姿态角/成像时间对相机姿态角误差补偿参数的影响。研究结果可为进一步优化该类型卫星影像成像模型,实现高精度几何定位提供参考依据。
The geo-positioning accuracy is an important parameter in evaluating the geometric quality of the satellite imagery. In this paper, integrating the stationary orbit and area-array image characteristics of GF-4 satellite and taking Google Earth images as geometric references, the authors analyzed the geo-positioning accuracies of multispectral camera images during and after the commissioning phase period. This study was concentrated on the relationships between the image geo-positioning accuracy and the sun azimuth angle, the sun altitude angle, the satellite azimuth angle, the satellite zenith angle, and the satellite attitude angle. Meanwhile, the influence of satellite attitude angle and imaging time on the compensation of camera’s attitude constant angle errors was discussed. The results can be used to improve the imaging model and hence are useful for the high accuracy geo-positioning of this type satellite imagery.
作者
韩杰
陶醉
李慧娜
苗宝亮
石宏斌
刘其悦
HAN Jie;TAO Zui;LI Huina;MIAO Baoliang;SHI Hongbin;LIU Qiyue(School of Urban and Rural Planning and Landscape Architecture, Xuchang University, Xuchang 461000, China;Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;School of Electric (Electromechanical) Engineering, Xuchang University, Xuchang 461000,China;96608 Troops of PLA, Luoyang 471000, China)
出处
《国土资源遥感》
CSCD
北大核心
2019年第3期104-110,共7页
Remote Sensing for Land & Resources
基金
河南省高等学校重点科研项目“高轨静止卫星大面阵相机几何定标及误差分析研究”(编号:19A420009)
河南省科技攻关项目“激光点云的CSG-BRep拓扑关系构建方法研究”(编号:182102310924)
国家自然科学基金项目“高分辨率光学遥感器辐射定标与归一化技术研究”(编号:41671345)
广西创新驱动发展专项(科技重大专项)项目“近海岸双频激光LiDAR探测仪产品开发与应用示范”(编号:2018AA13005)
国家民用空间基础设施项目“陆地观测卫星共性应用支撑平台”共同资助
