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The paper gives an automatic registration method for coarsely aligning multi-source satellite images. The contributions of the presented method lie in its novel feature matching strategy. Area features are depicted by a shape matrix and principle component analysis (PCA). By fusing the constraints of shape similarity and object orientation consistency of corresponding area objects, the ambiguity of feature matching can be effectively avoided. The registration results for SAR-optical satellite images demonstrate the robustness and efficiency of the given method.