Abstract：Based on the detection mechanism of space-based infrared early warning system for mid-course ballistic missile, the radiation generated by various radiation sources on the target surface and the intrinsic radiation of the target were calculated, and the radiation model of the missile target was established. Based on this, the imaging characteristics of missile midcourse were simulated in real time. The results show that the method can simulate the imaging characteristics of the target in different radiation environments well, and the real-time performance can meet the requirements.
