大气信道对红外激光通信系统性能影响的实验研究

针对近地面、准水平红外激光大气通信系统的应用,利用微脉冲激光雷达、大口径激光闪烁仪在济南市区进行了为期一周的昼夜连续观测,获得了影响红外激光通信系统性能的关键大气参量的信息.着重分析了大气衰减信道、大气湍流信道对一公里通信链路系统性能的影响,考查了通信设备在复杂大气条件下应用的可行性及可靠性.最后就减弱大气信道对通信性能影响的方法进行了总结和探讨.

Effects of Atmospheric Channel on System Performance of Infrared Laser Communication System

For the applications of the infrared laser communication system in the quasi-horizontal propagation path near the ground,diurnal variations of the atmospheric visibility and the refractive index structure constant were continuously measured in Jinan,Shangdong Province,for seven days.The key atmospheric parameters impacting on the performance of laser communication system were obtained.The influences of the extinction and turbulence channels on BER (Bit Error Rate) and ES (Error Second) were also analyzed for one kilometer communication chains.Furthermore,the feasibility and reliability of communication system were discussed under the complex atmospheric conditions.The methods for attenuating the effects on the performance of laser communication system were summarized and discussed.