摘要
太阳光辐射中的0.24-0.28μm波段被大气中臭氧层强烈吸收,使该波段的紫外辐射难以到达近地表面,形成了日盲区.日盲型紫外告警系统因此具有简单的工作背景.分析了日盲型紫外告警系统的原理,以此为基础搭建了一套实验系统;从能量传递的角度出发,对系统最远探测距离的计算进行了推导,求得实验系统对典型目标探测距离可达5 km;以光学成像理论为基础,对目标方位角的测量算法进行了探讨,经实验验证,系统测量精度可达0.2°.
In solar radiation,wave band from 0.24～0.28 μm is strongly absorbed by the ozone layer,which makes the ultraviolet radiation in this wave band difficult to reach the near earth surface.It forms a special region that is usually called solar blind region.Because of the strong absorption,the solar blind ultraviolet warning system has simple working background.The principle of the solar blind ultraviolet warning system is analyzed and a set of experiment system is constructed based on it.From the angle of energy transfer,the max system detection distance is deduced.For the typical target,the max detection distance of our experiment system is calculated to be 5 kin.Based on the optical imaging theory,the measuring arithmetic of target azimuth is discussed.In this system,the measuring precision of target azimuth can reach 0.2°by experimental validation.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z1期116-119,共4页
Infrared and Laser Engineering
关键词
日盲
紫外
告警
最远探测距离
目标方位角
Solar blind
Ultraviolet
Warning
Max detection distance
Target azimuth
