等离子体环境对卫星光通信系统的影响分析

Analysis of plasma environment effects on satellite optical communication system

为了研究空间等离子体环境对卫星光通信系统的影响,利用等离子体的特征频率,分析了等离子体对激光传输信号的影响,结果表明等离子体对激光信号的衰减很小,可以忽略。进一步分析了等离子体对卫星表面的充放电过程,结果表明100 eV低能等离子体对卫星起不到干扰破坏的作用,300 eV以上中等能量的等离子体可以有效地干扰卫星的正常工作。

To analyze the plasma environment effects on satellite optical communication system, the plasma frequency was used to describe the influence of plasma on laser signal transmission, the calculated result has shown that the attenuation of laser signal by plasma is very low, which could be neglected. Further the charge and discharge processes of satellite surface were analyzed, the results have shown that the low energy plasma 100 eV could not interfere the function of satellite, while high energy plasma 300 eV could effectively interfere its normal function.