In the scene matching system, the axis of camera is looking-down. For the limit of the interspace the camera is in strap-down way with carrier in pitch and the rolling direction. In this way, only the y-axis of the ground image accords with geography coordinate, and there is distortion from pitch and rolling attitude. Before images matching, correction is needed. Mathematical relation of adjustment angle α of course tracking control and attitudes (φ,,γ) and formulae of correction of the distortion are given.