“猫眼”回波功率数值分析模型比较研究

发布时间：2018-01-09 14:03

本文关键词：“猫眼”回波功率数值分析模型比较研究　出处：《激光杂志》2017年06期 　论文类型：期刊论文

【摘要】："猫眼"效应现象现已广泛应用于激光主动探测。为了更好地分析基于"猫眼"效应的探测系统的性能,分别采用几何光学与物理光学模型对目标回波功率进行理论分析,建立模型实现数值计算。针对轴上光束在不同传输距离、探测器光敏面分别处在光学系统焦平面和偏离焦平面情况的回波功率做了对比研究,并搭建探测系统进行了实验测试。研究结果表明:探测距离大于100m时,两种模型计算的回波功率吻合较好;小于100m时则存在明显差距;近距离时实验结果与几何模型计算数值更加接近,而远距离时物理光学模型计算结果、几何光学模型计算结果与实测数据非常接近。
[Abstract]:The phenomenon of cat's eye effect has been widely used in laser active detection. In order to better analyze the performance of the detection system based on cat's eye effect. The theoretical analysis of target echo power is carried out by using geometric optics and physical optics models respectively, and the model is established to realize the numerical calculation. The beam propagates at different distances on the axis. The echo power of the detector Guang Min in the focal plane of the optical system and in the case of deviation from the focal plane is compared and studied. The experimental results show that the echo power calculated by the two models is in good agreement when the detection distance is more than 100m. When it is less than 100m, there is obvious difference. The experimental results are closer to the calculated values of the geometric model at close range, and the calculated results of the physical optical model at a long distance are very close to the measured data.
【作者单位】：北京信息科技大学仪器科学与光电工程学院;
【基金】：北京市教委科研项目资助(KM201611232007) 北京市自然科学基金资助(4154071) 北京市组织部优秀人才项目资助(2014000020124G105)
【分类号】：TN249
【正文快照】： @bistu.edu.cn。军事应用中,基于“猫眼”效应的目标探测系统可以有效地侦测敌方的光学设备[1-2],例如无人机上的摄像头以及光学瞄准设备等。而此类探测相机内部,光学镜头焦平面上通常安装有图像传感器元件。外界光线照射相机后,到达图像传感器的部分光线会按照入射方向原路返

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