远场激光干扰态势内场等效方法研究  

Research on Internal Field Equivalent Method for Far Field Laser Interference Situation

作　　者：邹前进[1] 张恒伟[1] 苗锡奎 李路遥 刘小虎 陈育斌 路亚旭 ZOU Qian-jin;ZHANG Heng-wei;MIAO Xi-kui;LI lu-yao;LIU Xiao-hu;CHEN Yu-bin;LU Ya-xu(63891 Unit of PLA,Luoyang 471003,China)

机构地区：[1]中国人民解放军63891部队,河南洛阳471000

出　　处：《光学与光电技术》2024年第5期103-107,共5页Optics & Optoelectronic Technology

摘　　要：如何开展不同干扰态势下激光干扰效应测试,对红外成像系统抗干扰能力和激光装备干扰能力评估均具有重要意义.首先开展了远场条件下激光干扰实验,分析了激光远场干扰态势.得出在远场非饱和条件下,到达成像系统探测器面的光斑分布为近似平行光衍射.通过分析近场条件下激光干扰态势,得到在近场模拟激光远场干扰态势,可利用相似激光器实现波长和重频等参数重现;利用三维转台实现不同干扰激光入射角模拟;利用衰减装置实现不同功率/能量密度调节;还需要利用扩束装置对出射激光进行扩束.通过仿真,需截断比达到 3~5 倍才可较好地重现远场非饱和条件下到达成像系统探测器面前光斑分布.该结果对开展近场激光干扰效应实验和激光干扰系统研制具有参考意义.tThe authenticity of laser interference effect testing is high,but the cost is high.Therefore,laser interference effect testing under different interference situations is meaningful for evaluating the anti-interference ability of infrared imaging systems and the interference ability of laser equipment.In this paper,laser interference experiment under far-field conditions is done.And then,the far field situation of laser jamming is analyzed.It is pointed out that the spot distribution on the detector surface of imaging system is plane wave diffraction.Then the near field situation of laser jamming is analyzed.The wavelength and repetition rate of interference laser are simulated by the same parameters laser.The incidence angles of interference laser are simulated by three-dimensional turntable.The attenuation of power of interference laser beam is realized with attenuator.The divergence angle of laser beam is controlled by laser beam expander optical system.The spot distributions on the detector surface of the near field situation and the far field situation are quite similar when the truncation ratios of Gaussian laser beam are greater than three times.Finally,the structure chart of measurement system of laser interference effects are given.The research is useful for the laser disturbing imagining system test.It also can be applied to design of laser jamming test system.

关 键 词：激光干扰 干扰态势 近场等效 测试系统 近场条件 

分 类 号：TN248.5[电子电信—物理电子学]