Abstract: In the designing process of the satellite borne optical remote sensor, the technology of remote sensor imaging simulation can assess the feasibility of remote sensing system designing, and predict the imaging capability of the remote sensor. A high-resolution satellite borne optical remote sensor imaging simulation method was presented, which was based on the low-altitude remote sensing system. The data sources of the simulation were low-altitude wide-field image and multi-spectral image. Firstly, low- altitude multi-spectral wide field of simulation image was generated by image classification and classification fitting. Secondly, the ground surface reflectance image was calculated by the empirical linear method. Thirdly, the satellite borne optical remote sensing radiances image of sensors was simulated by the characteristics of spatial resolution, MTF, spectral response and atmospheric radiation transmission. The QuickBird satellite was used as a simulated object, the simulation experiment was operated, and the simulation precision was assessed. According to the experimental results, there is a high similarity between the simulation image and satellite image.