Geo-positioning accuracy analysis for domestic high-resolution satellite imagery
HAN Jie1, XIE Yong2, WU Guoxi1, LIU Qiyue2, GAO Hailiang2, GUAN Xiaoguo1
1. School of Urban-rural Planning and Architecture, Xuchang University, Xuchang 461000, China;
2. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
国产高空间分辨率卫星影像的几何定位精度一直是人们关注的热点问题。以GF-1和ZY-3卫星影像为研究对象，在分析检验有理多项式参数（rational polynomial coefficients，RPCs）存在的系统误差后，采用基于像面仿射变换的有理函数模型（rational function model，RFM）区域网平差方法消除单颗卫星立体影像对的定位系统误差；全面分析并评价了影像的几何定位精度，包括单景影像的定位精度、单颗卫星立体影像对的定位精度以及多星联合的定位精度；初步探讨了影响国产高空间分辨率卫星影像几何定位精度的主要因素，为实现国产卫星联合高精度对地观测提供参考。
The geo-positioning accuracy of domestic high-resolution satellite imagery is a hotspot problem that has attracted much attention among researchers. In this paper, GF-1 and ZY-3 satellite images were treated as investigated objects. After detecting the system error of domestic high-resolution satellite imagery rational polynomial coefficierts(RPCs), using the rational function model(RFM) bundle adjustment method based on the affine model in image space the three-dimensional geo-positioning system errors of stereo image pairs from one single satellite platform were eliminated. The geo-positioning accuracy of domestic high-resolution satellite imagery was comprehensively analyzed, including the geo-positioning accuracy of single scene and stereo image pairs from single and different satellite platforms. Finally, the main factors affecting the geo-positioning accuracy of domestic high-resolution imagery was discussed, and the results obtained by the authors would provide some useful reference information to realize the domestic satellites joint observations.
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2016, Vol. 28 
