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ZiYuan-3 (ZY-3) mapping satellite is the first civilian high-resolution stereo mapping satellite of China. The satellite’s objective isoriented towards plotting 1:50,000 and 1:25,000 topographic maps. This article proposes ZY-3 mapping satellite Rigorous ImageGeometry Model and Rational Function Model (RFM). In addition, this paper utilizes the image of the ZY-3 satellite with the regionof flatlands, hills and mountains for the block adjustment experiment. Different ground control points are selected and the accuracyis validated by check points, and the some Digital Surface Model (DSM), Digital Orthophoto Map (DOM) are generated and theaccuracy is also validated by check points. The experiment reveals that the planar accuracy of DOM and vertical accuracy of DSMare better than 3m and 2 m, respectively. The experiment demonstrates the effectiveness of ZY-3 mapping satellite image geometrymodel

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

THE GEOMETRIC ACCURACY VALIDATION OF THE ZY-3 MAPPING SATELLITE