Abstract: Each pixel of strip image obtained by push-broom aerial photography system has precise coordinates of WGS-84. The stereo-model formed by aerial strip image is rigid, bearing strong stability, but has low precision in Z coordinate after carried on aerial triangulation adjustment. Because of influenced by model's rigidity and the low precision of model's Z coordinate, layout of model's image control points for aerial triangular adjustment is different from other situations and has its own particularity. When surveying the image control points is carried on under multi-spatial reference constraints without other choices, including CORS base station, GPS control network, level control network etc. in aerial photograph region. It is key point to validate the coordinate precision of the control points in existing spatial reference with IGS points and EGM2008 data to avoid the their potential errors and make certain the image control points can be surveyed quickly and precisely.

Key words: push-broom digital aerial image, layout of image control points, reference constraints, surveying of image control points, IGS