海水信道下抵达光信号散射成份的比例特性分析  

Proportion characteristics analysis of scattering components of arriving optical signal under seawater channel

作　　者：王伟[1,2] 李晓记 刘致宏[3] 杜卫海 高天 WANG Wei;LI Xiaoji;LIU Zhihong;DU Weihai;GAO Tian(Key Laboratory of Cognitive Radio and Information Processing of Ministry of Education,Guilin University of Electronic Technology,Guilin Guangxi 541004,China;Guangxi Experiment Center of Information Science,Guilin Guangxi 541004,China;School of Marine Engineering,Guilin University of Electronic Technology,Beihai Guangxi 536000,China)

机构地区：[1]桂林电子科技大学认知无线电与信息处理教育部重点实验室,广西桂林541004 [2]广西信息科学实验中心,广西桂林541004 [3]桂林电子科技大学海洋工程学院,广西北海536000

出　　处：《光通信技术》2020年第4期58-62,共5页Optical Communication Technology

基　　金：国家自然科学基金项目(批准号:61761014)资助;广西信息科学实验中心项目(编号:PT1604)资助;广西研究生教育创新计划项目(编号:YCSW2019152)资助;桂林电子科技大学研究生优秀学位论文培育项目(编号:17YJPYSS38)资助.

摘　　要：针对海水光信道的散射效应问题,选择Henyey-Greenstein函数产生散射角,基于蒙特卡洛(MC)仿真方法分析了Ⅰ类水质和Ⅱ类水质信道下,传输距离和接收视场角(FOV)对抵达光信号散射成份的比例特性的影响。分析结果表明:Ⅰ类水质信道下,散射成份只占小于1.2%的比例;Ⅱ类水质信道下散射成份明显增加,此时,FOV的取值对散射成份比例特性的影响明显;尤其在Ⅱ类水质(港口)信道下,当传输距离大于6.0 m时,散射成份几乎占抵达光信号的100%。Aiming at the scattering effects of seawater optical channel, the Henyey-Greenstein function is selected to generate the scattering angle. Based on the Monte Carlo(MC) simulation method, the effects of transmission distance and field of view(FOV) on the proportion of scattering components of arriving optical signal under caseⅠseawater and caseⅡseawater channels are analyzed successively. The results show that the proportion of scattering components of arrival optical signal under caseⅠseawater is less than 1.2%. The scattering components is significantly increased under case Ⅱ seawater channels, and the value of FOV has an obvious effect on the proportion characteristics of scattering components. Especially for the caseⅡseawater(harbor)channels, the proportion of scattering components is approaching to 100% when the transmission distance is longer than 6.0 m.

关 键 词：海水信道 抵达光信号 散射成份 比例特性 蒙特卡洛 

分 类 号：TN929.1[电子电信—通信与信息系统]