In order to estimate the ability and quality of high-resolution linear CCD optical remote sensing satellite in advanced, the
flat terrain and urban region with high buildings were selected as the experimental region. For flat terrain, the data source
for simulation was DEM and existent orthography. For the urban region, the data source was 3D models. When satellite
image was simulating, the imaging model was the principle of line perspective and typical geometrical error in the sensor
system was considered. The radiation transmission of imaging was analyzed and realized with the look-up table which
constructed by 6S radiation transmission model. Finally, the simulated image of geometrical distortion rules was
examine by experiment, and the results shows that the imaging simulation can achieve very good performance.