Abstract: In this paper, the missile plume UV radiation principles and energy transfer equations was analyzed, the missile plume UV radiation model was established which was combined with the missile motion formula in the boost phase. The relationship between the plume UV radiation and the detector image plane irradiance was derived by considering the effects of the atmospheric transmittance and the Earth's background brightness. Based on the detection simulation by SBIRS-GEO early-warning satellites, the UV radiation image plane irradiance changes of high and low trajectories in different detection band were compared. The results show that the transmission characteristic of the UV radiation in the atmosphere is the main factor to affect the image plane irradiance change. Compared with 300-400nm, the 200-300nm is more suitable to be selected as the detection band for it can discover the target in earlier time and lower height.