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光学窗口后向回波能量模型及特性研究

Keywords: 激光光学,光学窗口,猫眼效应,高斯光束,回波特性

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Abstract:

基于光学窗口后向回波的能量特性进行猫眼效应回波探测系统设计,利用Collins公式建立了光学窗口后向回波的能量模型,通过数值计算研究了后向回波能量的空间传输、空间分布、探测系统接收回波能量等特性,利用搭建的实验装置对模型进行了验证.结果表明,后向回波能量特性与光学系统的焦距、离焦量、孔径以及入射角密切相关,解决了几何光学方法无法分析能量空间分布的问题;随着入射角的增大,回波光束形心相对激光发射中心会存在一定的偏差量;通过实验验证了在光学窗口视场范围内,入射角对于回波能量空间分布几乎没有影响.

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