摘要
大气激光光通信是一激光为光源、空间为信道进行传输信息的一种通信方式。在大气激光通信中由于大气的散射和吸收导致信号功率降低,而大气湍流会使大气折射率出现较大浮动,这种浮动会使传播的光信号强度和相位随机浮动,从而会使通信链路误码率增大,严重影响通信系统性能。本文针对大气中激光通信系统,利用快速傅里叶变换方法产生符Kolmogorov湍流理论的随机相位,基于反步传播法对光速通过大气湍流进行了数值仿真进而得到了穿过大气湍流后的光强和相位分布。
Atmospheric laser communication is a laser as light source,space for the transmission of information of a communication channel. Atmospheric laser communication due to atmospheric scattering and absorption leads to reduced signal power,and refractive index of atmospheric turbulence in the atmosphere there are more floating,the float will make the transmission of signal intensity and phase of random float,which will make communication link error rate increases,seriously affecting communication system. In this paper,aiming at the atmospheric laser communication system and method using Fast Fourier transform breaks Kolmogorov turbulence theory of random phase,based on back-propagation method for numerical simulation of the speed of light through atmospheric turbulence and then after you got through the turbulence intensity and phase distribution.
出处
《激光杂志》
北大核心
2015年第12期153-155,共3页
Laser Journal
基金
江苏省工程技术研发中心项目(KF20140501)
关键词
激光光通信
大气湍流
傅里叶变换
反步法
仿真
laser optical communications
atmospheric turbulence
fourier transform
backstepping
simulation
