大气闪烁对相干态量子干涉雷达探测性能的影响  

Influence of Atmospheric Scintillation on Detection Performance of Coherent State Quantum Interferometric Radar

作　　者：王书 任益充[1] 饶瑞中 苗锡奎 Wang Shu;Ren Yichong;Rao Ruizhong;Miao Xikui(Key Laboratory of Atmospheric Optics,Anhui Institute of Optics and Fine Machines,Chinese Academy of Sciences Hefei,Anhui 230031,China;University of Science and Technology of China,Hefei,Anhui 230026,China;Key Laboratory of Electro Optical Countermeasures Test and Evaluation Technology,Luoyang,Henan 471003,China)

机构地区：[1]中国科学院安徽光学精密机械研究所大气光学重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026 [3]光电对抗测试评估技术重点实验室,河南洛阳471003

出　　处：《中国激光》2018年第8期236-244,共9页Chinese Journal of Lasers

基　　金：国家自然科学基金(11574295);光电对抗测试评估技术重点实验室开放课题(GKCP2016001)

摘　　要：以马赫-曾德尔干涉仪为模型,分析了基于相干态光源的量子干涉雷达的探测原理,系统研究了由大气闪烁引起的光强起伏和大气损耗对量子干涉雷达性能的影响。将湍流大气视作耗散-涨落通道,结合经典湍流统计推导得到了湍流大气的透过率系数概率分布(PDTC)函数P(T)。利用P(T)分析了量子干涉雷达的灵敏度、分辨率,深入讨论了大气平均透过率T-A、闪烁指数β2D对其探测性能的影响。结果显示:高损耗环境中大气闪烁引起的透过率起伏能显著提高相干态量子干涉雷达的灵敏度。Based on the Mach-Zehnder interferometer,the detection principle of quantum interferometric radar based on coherent state light source is analyzed.The influence of intensity fluctuation and atmospheric loss caused by atmospheric scintillation on the performance of quantum interferometric radar is studied systematically.Then,the atmospheric channel is regarded as dissipation-fluctuation channel.Based on the classical statistical theory of turbulence,the probability distribution of transmission coefficient（PDTC）function P（T）is derived.Furthermore,P（T）is used to investigate the sensitivity and resolution of the quantum interferometric radar,especially the influence of average transmission coefficient T-Aand the scintillation indexβ2 Don the detection performance of the quantum interferometric radar.These research results exhibit that,in a high-loss environment,the fluctuation of transmission caused by atmospheric scintillation is able to improve the sensitivity and resolution of the coherent state quantum interferometric radar remarkably.

关 键 词：量子光学 大气闪烁 概率密度函数 超灵敏度 

分 类 号：O431.2[机械工程—光学工程]