Simulation of space-based observed star map in space radiation environment

Due to the speciality of space environment for the observation system, the observed images are interfered by space radiation noise to some extent. To improve the reality of image simulation, we propose a new method of star map simulation with space radiation effect in this paper. First of all, basic star map simulation is realized in this paper. Both star position and lightning magnitude are calculated and modeled. And point diffusion is considered. Then, with the CCD imaging theory, space radiation effects on star map are calculated and modeled. The result indicates that this method can effectually simulate the space-based observed star map in radiation environment.