逆向调制光通信的大气湍流及孔径平均效应
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摘要
研究了逆向调制光通信回波反射链路中的大气湍流效应及抑制方法。利用相位屏方法模拟大气湍流效应,建立了弱湍流情况下高斯光束在传统无线光通信和逆向调制光通信中的传播模型,对比分析了高斯光束在传统自由空间光通信单向链路和逆向调制光通信双向链路中大气湍流引起的闪烁指数。结果显示大气湍流对逆向调制光通信回波反射链路的影响远大于对传统自由空间光通信中单向链路的影响。还研究了孔径平均效应对逆向调制光通信中回波反射链路中闪烁指数的影响。结果表明,对于逆向调制光通信,大的接收孔径对于大气闪烁的抑制依然有效。
The effect of atmospheric turbulence and its suppression methods in traditional free space optical communication link and modulating retro-reflector optical communication link were studied.The phase screen method was used to simulate the effect of atmospheric turbulence,and the propagation model of Gaussian beam in traditional free space optical communication link and modulating retro-reflector optical communication link was established.The scintillation index of Gaussian beam influenced by atmospheric turbulence in free space optical communication link and modulating retro-reflector optical communication link was compared and analyzed.The results show that the influence of atmospheric turbulence on echo reflection link in modulating retro-reflector optical communication is much greater than that of link in traditional free space optical communication.The scintillation index influenced by the average aperture in echo reflection link of the modulating retro-reflector optical communication was also studied.The results show that the large receiving aperture is still effective for the suppression of atmospheric scintillation in modulating retro-reflector optical communication.
The effect of atmospheric turbulence and its suppression methods in traditional free space optical communication link and modulating retro-reflector optical communication link were studied.The phase screen method was used to simulate the effect of atmospheric turbulence,and the propagation model of Gaussian beam in traditional free space optical communication link and modulating retro-reflector optical communication link was established.The scintillation index of Gaussian beam influenced by atmospheric turbulence in free space optical communication link and modulating retro-reflector optical communication link was compared and analyzed.The results show that the influence of atmospheric turbulence on echo reflection link in modulating retro-reflector optical communication is much greater than that of link in traditional free space optical communication.The scintillation index influenced by the average aperture in echo reflection link of the modulating retro-reflector optical communication was also studied.The results show that the large receiving aperture is still effective for the suppression of atmospheric scintillation in modulating retro-reflector optical communication.
引文
[1]陈志晓.自由空间光通信中光强闪烁抑制的研究[D].北京:北京邮电大学,2013.Chen Zhixiao.Research scintillation supression techniques for free-space optical communications[D].Beijing:Beijing University of Posts and Telecommun.,2013.
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[13]王惠琴,李源,胡秋,等.兰州地区夜间光强起伏特性实验[J].光子学报,2017,47(4):188-195.Wang Huiqin,Li yuan,Hu Qiu,et al.Experimental investigation on light intensity fluctuation at night in Lanzhou area[J].Acta Photon.Sin.,2017,47(4):188-195.
[14]唐军成,钱仙妹,苗锡奎,等.像差对聚焦高斯光束大气传输轴闪烁特性的影响[J].光学学报,2017(11):1-10.Tang Juncheng,Qian Xianmei,Miao Xikui,et al.Effects of aberrations on on-axis scintillation propagating properties of focus Gaussian beams in turbulent atmosphere[J].Acta Opt.Sin.,2017(11):1-10.
[15]边永昌.大气对空间光通信影响研究[D].长春:长春理工大学,2007.Bian Yongchang.The research on atmosphere influence of space optical communication[D].Changchun:Changchun University of Science and Technology,2007.
[2]张娜娜,单欣,张燕革,等.Non-Kolmogorov湍流对光强影响的模拟实验[J].光子学报,2018,47(6):0601002.Zhang Nana,Shan Xin,Zhang Yan'ge,et al.Simulated experiment of the light intensity influenced by NonKolmogorov turbulence[J].Acta Photon.Sin.,2018,47(6):0601002.
[3]曾智龙,黄海洋,王侠,等.逆向调制空间激光通信技术研究进展[J].光通信技术,2017,41(12):20-23.Zeng Zhilong,Huang Haiyang,Wang Xia,et al.Research progress in the technology of MRR free space optical communication[J].Opt.Commun.Technol.,2017,41(12):20-23.
[4]任建迎,孙华燕,张来线.“猫眼”逆向调制自由空间光通信技术[J].激光与红外,2017,47(1):98-102.Ren Jianying,Sun Huayan,Zhang Laixian.Free space optical communication technology based on cat-eye modulating retroreflector[J].Infrared and Laser Engin.,2017,47(1):98-102.
[5]张忠玉,汪井源,徐智勇,等.基于散斑检测的逆向调制光通信[J].光子学报,2017,46(12):173-180.Zhang Zhongyu,Wang Jingyuan,Xu Zhiyong,et al.A novel MRR communication system based on speckle detection[J].Acta Photon.Sin.,2017,46(12):173-180.
[6]邱灏,汪井源,徐智勇,等.逆向调制光通信技术[J].军事通信技术,2015,36(2):29-33.Qiu Hao,Wang Jingyuan,Xu Zhiyong,et al.Modulating retro-reflector optical communication technology[J].J.of Military Commun.Technol.,2015,36(2):29-33.
[7]陈纯毅.无线光通信中的大气影响机理及抑制技术研究[D].长春:长春理工大学,2009.Chen Chunyi.Study on mechanism and mitigation technology of atmospheric effects in optical wireless communications[D].Changchun:Changchun University of Science and Technol.,2009.
[8]Plett M,Rabinovich W S,Mahon R,et al.Free-space optical communication link across 16 kilometers over the Chesapeake bay to a modulated retroreflector array[J].Opt.Engin.,2008,47(4):045001.
[9]Mahon R,Moore C I,Ferraro M,et al.Atmospheric turbulence effects measured along horizontal-path optical retro-reflector links[J].Appl.Opt.,2012,51(25):6147-6158.
[10]Kaushal H,Kaddoum G.Optical communication in space:Challenges and mitigation techniques[J].IEEE Commun.Surveys&Tutorials,2017,19(1):57-96.
[11]饶瑞中.光在湍流大气中的传播[M].合肥:安徽科学技术出版社,2005.Rao Ruizhong.Light Propagation in The Turbulent Atmosphere[M].Hefei:Anhui Science and Technol.Press,2005.
[12]许通.自由空间光通信若干关键技术研究[D].北京:北京邮电大学,2015.Xu Tong.Research of several key technologies in free space optical communication[D].Beijing:Beijing University of Posts and Telecommun.,2015.
[13]王惠琴,李源,胡秋,等.兰州地区夜间光强起伏特性实验[J].光子学报,2017,47(4):188-195.Wang Huiqin,Li yuan,Hu Qiu,et al.Experimental investigation on light intensity fluctuation at night in Lanzhou area[J].Acta Photon.Sin.,2017,47(4):188-195.
[14]唐军成,钱仙妹,苗锡奎,等.像差对聚焦高斯光束大气传输轴闪烁特性的影响[J].光学学报,2017(11):1-10.Tang Juncheng,Qian Xianmei,Miao Xikui,et al.Effects of aberrations on on-axis scintillation propagating properties of focus Gaussian beams in turbulent atmosphere[J].Acta Opt.Sin.,2017(11):1-10.
[15]边永昌.大气对空间光通信影响研究[D].长春:长春理工大学,2007.Bian Yongchang.The research on atmosphere influence of space optical communication[D].Changchun:Changchun University of Science and Technology,2007.