一种激光脉冲相关检测的改进方法  

Improvement Method in Laser Pulse Correlation Detection

作　　者：韦卫东[1] 孙晓泉[1] 孙晓军[1] 

机构地区：[1]脉冲功率激光技术国家重点实验室,安徽合肥230037

出　　处：《光电技术应用》2011年第3期4-9,共6页Electro-Optic Technology Application

基　　金：重点实验室基金(10J1003)

摘　　要：在激光脉冲相关检测系统中,针对窄带滤光片的非理想性以及并联探测单元之间的背景光干扰存在相关性的问题,提出了一种相关检测系统的改进方法。利用两路探测单元同时接收目标信号和背景光的混合信号,另两路视场完全相同的探测单元仅接收背景光,将它们的输出分别对应相减后再进行相关处理,从而抑制了各单元间相关的背景光干扰。采用Simulink软件进行了仿真。仿真结果表明:改进后的系统对工作波长之外的入射光具有明显的抑制作用,能够有效降低由背景光干扰而引起的虚警,从而证明了该方法的可行性和有效性。For the problem that laser pulse correlation detector faces challenges of both imperfect narrow-band filter and dependency of background light interference received by parallel detectors, an improved method is proposed. Two of four parallel detectors are used for receiving target signal and background light, while the other two receive background light only. The correlation background light interference is restrained through subtracting background light from the mixed signal before correlation processing. Simulation results demonstrate that the light out of working spectrum is remarkably resisted, and false-alarm probability caused by background light interference is lower effectively, which prove the method is feasible and effective.

关 键 词：相关检测 背景光干扰 激光脉冲 

分 类 号：TN29[电子电信—物理电子学]