各向异性海洋湍流对外差式DPSK无线光通信系统的性能研究  

Performance of Heterodyne DPSK Wireless Optical Communication System Under Anisotropic Ocean Turbulence

作　　者：贺锋涛 王妮 张建磊 杨祎 王清杰 李碧丽 He Fengtao;Wang Ni;Zhang Jianlei;Yang Yi;Wang Qingjie;Li Bili(School of Electronic Engineering,Xi’an University of Posts and Telecommunications,Xi’an,Shaanxi 710121,China;Key Laboratory of Underwater Information and Control,China Shipbuilding Industry Corporation 705 Research Institute,Xi’an,Shaanxi 710077,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121 [2]中国船舶重工集团第705研究所水下信息与控制重点实验室,陕西西安710077

出　　处：《激光与光电子学进展》2021年第19期101-109,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61805199);国家基础科研计划实验室稳定支持专题项目(JCKY2020207CD02);水下信息与控制国家重点实验室项目(XK-01-61-KS-0176);陕西省技术创新引导专项基金(2020TG-001)。

摘　　要：应用广义的惠更斯-菲涅耳原理及改进的Rytov方法,采用基于Gamma-Gamma光强概率分布的海洋湍流信道模型,得到了中断概率解析式。并在此基础上对各向异性海洋湍流高斯光束外差式差分相移键控(DPSK)调制的中断概率性能进行了研究。仿真分析了不同的各向异性海洋湍流下各种海洋湍流参数(温度与盐度波动对功率谱变化贡献之比、单位质量流体动能耗散率、均方温度耗散率)、传输距离、DPSK调制的数据传输速率对中断概率的影响。为降低高斯光束DPSK调制下的中断概率、提高通信质量及可靠性提供了理论依据。In this study,using the extended Huygens-Fresnel principle and the improved Rytov method,a turbulence channel model based on the Gamma-Gamma intensity probability distribution is used to obtain the analytical expression of outage probability.On this basis,the outage probability characteristics of the heterodyne differential phase-shift keying(DPSK)modulation of Gaussian beam waves are studied in anisotropic turbulence.A performance study under different anisotropic ocean turbulence conditions is conducted.The effects of various turbulence parameters,i.e.,the contributions of temperature and salinity to the power spectrum,the dissipation rate of kinetic energy per unit mass fluid,and the dissipation rate of mean-squared temperature,are investigated,and the transmission distance and data transmission rate on outage probability are analyzed.The analysis provides a theoretical basis for reducing the outage probability of Gaussian beam DPSK modulation and improving communication quality and reliability.

关 键 词：海洋光学 水下无线光通信 各向异性海洋湍流 高斯光束 外差式差分相移键控 Gamma-Gamma信道模型 

分 类 号：O437[机械工程—光学工程] P733.3[理学—光学]