Research On The Super Resolution Imaging System

With the increased demand of the military reconnaissance, land resources exploration and other military and civilian applications, how to obtain high resolution remote sensing images with little cost has recently become a research focus in the field of space remote sensing. On the point view of the practical project application, this paper which associated super-resolution technology with the optical system and the sampling system, devises and analyzes the super-resolution imaging system for the technology engineering. The following is the main points:Firstly, irregular sampling principle to realize super-resolution imaging is analyzed, and the mathematical models of tilting mode sampling technology, horizontal decelerating mode sampling technology and sub-pixel imaging technology are studied. According to above model idea, the computer simulation is realized, and the image data sampled is reconstructed by bilinear interpolation, and simulation results are evaluated with PSNR and information entropy.Secondly, various parameters of the space-based camera are theoretically analyzed, and the parameters of the system studied are presented. According to the requirements of the irregular sampling technology, the focal plan arrangement is presented. Based on theory of MTF, the MTF of sub-pixel imaging system is simulated, and MTF of the regular and sub-pixel imaging system is analyzed comparatively.Finally, according to the system parameters, optical architecture, the focal plan arrangement and its stitching accuracy , the optical system is designed and analyzed by tolerance analysis and image quality evaluation.