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晴空背景下地基红外告警系统作用距离
引用本文:方义强,樊祥,程正东,朱斌,张发强,施展.晴空背景下地基红外告警系统作用距离[J].红外与激光工程,2013,42(7):1654-1659.
作者姓名:方义强  樊祥  程正东  朱斌  张发强  施展
作者单位:1.脉冲功率激光技术国家重点实验室 合肥电子工程学院,安徽 合肥 230037
摘    要:作用距离是红外告警系统的重要参数指标,其大小由告警系统、目标和背景等的特点决定。对晴空背景下红外告警系统的作用距离进行了研究,充分考虑了大气传输和大气辐射的特点,建立了作用距离的理论计算模型,结合计算模型和典型数据,针对面目标和点目标两种情况,计算了不同目标高度和不同目标高度角时大气对作用距离的影响。结果表明:在目标飞行高度一定时,只有当目标高度角大于一定角度时目标才可能被探测,该角度随目标的飞行高度增大而减小。

关 键 词:大气红外辐射    作用距离    辐射亮度    大气透过率    红外告警
收稿时间:2013-01-15

Operating range of ground-based IR alarm system in clear sky
Fang Yiqiang , Fan Xiang , Cheng Zhengdong , Zhu Bin , Hang Faqiang , Shi Zhan.Operating range of ground-based IR alarm system in clear sky[J].Infrared and Laser Engineering,2013,42(7):1654-1659.
Authors:Fang Yiqiang  Fan Xiang  Cheng Zhengdong  Zhu Bin  Hang Faqiang  Shi Zhan
Affiliation:1.State Key Laboratory of Pulsed Power Laser Technology,Electronical Engineering Institute of Hefei,Hefei 230037,China
Abstract:The operating range is an important parameter of the IR alarm system, and its value is decided by the characteristics of the alarm system, the target and the background. A research was done specially on the operating range of ground-based IR alarm system in clear sky. The traits of the transmission and radiation of the atmosphere were fully considered, and then the theoretic calculating model of the operating range was established. Combining the model and typical data, and considering the two situation of cover target and spot target, the effects of the atmosphere on the operating range were calculated for different target altitude and high angle. The results show that the target can be detected only when the target's high angle is larger than a certain value if the altitude of the target is fixed, and this angle decreases as the target attitude increases.
Keywords:atmosphere infrared radiation  operating range  radiance  atmosphere transmittance  infrared alarm
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