Abstract Rays hit droplets in the transmission path on severe weather conditions such as rain and fog during the target optical detection process. The presence of droplets causes the directions of rays and the amount of energy to change after rays pass through droplets, leading energy that eventually enters the detector to change, affecting target detection. This study establishes an energy distribution model of the receiving surface affected by droplets in the air based on the basic principle of light radiation transmission. The results of single and planar droplets in the air on the transmission of light are calculated by the Monte Carlo ray tracing method combining the physical properties of droplets and air. The effects of different distances between the droplets and receiving surface on the energy distribution of the receiving surface are analyzed. Droplets in the air have a similar effect on the parallel light with convex lens. The energy distribution is related to the distance between the receiving surface and droplets in the air. The energy recorded on the receiving surface and affected by droplets first converges to a point and then diverges. There are almost no rays corresponding to the droplets on the receiving surface when the distance between the receiving surface and droplets is sufficiently large. This study provides new ideas and methods for obtaining the influence of droplets in the air on the energy distribution of the receiving surface in target optical detection, which provides an effective reference for detection.

中文翻译：

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空气中的液滴对目标光学检测中光传输的影响

摘要 目标光学探测过程中，在雨雾等恶劣天气条件下，射线会撞击传输路径中的液滴。液滴的存在导致射线穿过液滴后的射线方向和能量发生变化，导致最终进入检测器的能量发生变化，影响目标检测。本研究基于光辐射传输的基本原理，建立了受空气中液滴影响的接收面能量分布模型。通过结合液滴和空气的物理特性的蒙特卡罗射线追踪方法计算空气中单个和平面液滴对光透射的结果。分析了液滴与接收面之间不同距离对接收面能量分布的影响。空气中的水滴对凸透镜的平行光也有类似的作用。能量分布与接收面与空气中液滴之间的距离有关。记录在接收面上并受液滴影响的能量首先会聚到一个点然后发散。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获得目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。空气中的水滴对凸透镜的平行光也有类似的作用。能量分布与接收面与空气中液滴之间的距离有关。记录在接收面上并受液滴影响的能量首先会聚到一个点然后发散。当接收面与液滴的距离足够大时，接收面上几乎没有液滴对应的射线。该研究为获得目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。空气中的水滴对凸透镜的平行光也有类似的作用。能量分布与接收面与空气中液滴之间的距离有关。记录在接收面上并受液滴影响的能量首先会聚到一个点然后发散。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获取目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。能量分布与接收面与空气中液滴之间的距离有关。记录在接收面上并受液滴影响的能量首先会聚到一个点然后发散。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获取目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。能量分布与接收面与空气中液滴之间的距离有关。记录在接收面上并受液滴影响的能量首先会聚到一个点然后发散。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获得目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获得目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。当接收面与液滴之间的距离足够大时，接收面上几乎没有与液滴对应的射线。该研究为获得目标光学探测中空气中液滴对接收面能量分布的影响提供了新的思路和方法，为探测提供了有效的参考。