影响激光主动探测效能的机理研究

利用猫眼效应可对光电装备进行主动探测。面对环境的复杂性,寻求提高主动探测效能的方法尤为重要。建立猫眼效应分析模型,分析影响猫眼效应回波效能的作用机理,利用入射角,离焦量等参数推导出回波能量平均照度表达式,分析制约主动探测能力的因素从而寻求提高探测概率的方法,并利用FRED进行仿真。研究表明：离焦量产生回波发散角降低回波能量；微量的入射角在不改变有效通光口径的同时可以降低回波发散角；利用探测激光波长和发散角可以弥补猫眼系统固有的离焦量从而提高探测能力；仿真结果证实了这个结论。

Research on the mechanism of laser active detection

The cat eye effect can be used for active detection of electro-optical equipment.In the face of the complexity of the environment,it is particularly important to seek ways to improve the effectiveness of active detection.The analysis model of cat eye effect was established,and the influence mechanism of the echo on the cat eye effect was analyzed.The incident angle,the defocusing amount and other parameters were used to derive average illumination expression of the echo energy.The factors that restrict the ability of active detection were analyzed so as to seek a method to improve the detection probability.Finally,the simulation is carried out by using FRED.Results show that the defocusing results in echo divergence angle which will reduce the echo energy;the tiny incident angle without changing the effective optical aperture can reduce the echo divergence angle;the detection of laser wavelength and divergence angle can compensate for the inherent defocusing amount of cat eye system so as to improve the detection ability;the simulation results have proved the conclusion.