摘要
分析了导弹尾焰紫外辐射原理和能量传递方程，结合导弹主动段运动方程，建立了尾焰紫外辐射模型。考虑大气透过率和地球背景亮度的影响，得到导弹主动段尾焰紫外辐射与探测器像面辐照度关系。基于SBIRS—GEO预警卫星的探测仿真，比较了不同探测波段下高、低弹道尾焰紫外辐射的像面辐照度变化。结果表明：紫外辐射在大气中的传输特性是影响像面辐照度变化的主要因素；相比于300～400nm渡段，200～300nm波段可以提早发现目标、降低发现高度，更适宜作为探测波段。
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.
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第6期1404-1409,共6页
Infrared and Laser Engineering
基金
国家自然科学基金(40905011)
关键词
紫外辐射
尾焰羽焰
导弹主动段
大气透过率
像面辐照度
ultraviolet radiation
exhaust plume
missile boost phase
atmosphere transmission
image plane irradiance
