Establishing accurate light geometry model, feature and image between the positive and negative calculate formula is derived, which is the key steps of space TDI CCD (charge-coupled device) time delay integral camera dynamic imaging simulation. Stereo mapping satellite link simulation based on ray tracing all the main line, with high precision high resolution surface physical model for the input source, considering the atmospheric radiation transmission, optical system imaging spectral response, detectors and camera noise and so on each link, complete the imaging process end-to-end complete analysis. In visible light optical remote sensing camera, for example, considering the precession of orbit, the earth under the inertial system of precession and nutation TDI CCD stitching, under the condition of complete double array camera ray tracing dynamic imaging geometry modeling, and the model error sources are analyzed. Verified by experiment and analysis, physical model to face the camera geometry precision of 124 m, forward-looking camera positioning accuracy of 193 m, double line array camera is high precision, which satisfies the requirement of the geometrical model of three-dimensional mapping all link simulation.