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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°.
The 0.24-0.28μm band of solar radiation is strongly absorbed by the ozone layer in the atmosphere, making it difficult to reach the near-surface UV radiation in this band, resulting in a blind area. The solar blind type UV alarm system has a simple working background. Based on this principle, a set of experimental system is set up. Based on the energy transfer, the calculation of the farthest detection distance of the system is deduced, and the experimental system can reach the typical target detection distance up to 5 km; Based on the theory of optical imaging, the measurement algorithm of the azimuth of the target is discussed. The experimental results show that the accuracy of the system can reach 0.2 °.