Imaging simulation is an essential step in camera development. The aerial linear whiskbroom camera has the characteristics of long distance and large imaging angle, which easily leads to the coordinate projection calculation in the imaging simulation process is iteratively non-convergence. To solve this problem, a new iterative coordinate projection calculation method based on visual vector segmentation is proposed. Firstly, the visual vector is segmented in the iteration window, and then the elevation difference between each segmentation and the corresponding ground point is calculated according to the coordinates of the image point and the exterior orientation element of the scan line. The segmentation of minimum elevation difference is found. Then the iterative window continually built at the segmentation is calculated until the minimum elevation difference is less than the given threshold, thus the image coordinates corresponding to three-dimensional coordinates of the ground point are obtained. Finally, the gray value of the orthographic image is given to the simulated pixel point corresponding to the ground point to generate simulation images. The imaging simulation results of the experimental data from three different terrains show that the accuracy of this imaging simulation method is higher than 0.005 pixel. Its robustness is higher and it can be applied to the imaging simulation of large-angle imaging method.