In order to recognize axes-symmetric targets in the sky, based on target′s projection transform and measurement of its three dimensional (3D) orientation, a simplified approach is put forward in this paper, which is realized in the way of matching filter and coordinate transform. An appropriate projected image of a target is chosen to make a discriminating template and is encoded to a matching filter by using computer-generated hologram. After 3D orientation of the target is explored, coordinate transform of the matched filter can be carried out according to its pitching angle and azimuth angle, and then this target is detected in the way of matching correlation. By this simplified detection method, it is studied how to select template for 3D axes-symmetric object, and recognized effect is simulated for 2D arbitrary target and 3D axes-symmetric object at random angle. With the combination of only two filters, which are made from target′s projection of 45° and 90°, the minimum correlation coefficient between the target and template in various pitching angle is 0.4472 which is far more than maximal correlation coefficient of 0.06 between plane interference objects and template.