近地空间通信中的大气闪烁影响分析

Analysis of the Troposphere Scintillation for the Near-space Communications

利用单艇低仰角低空飞行试验测试数据,验证了Van de Kamp大气闪烁衰减估计模型在低仰角传输链路中的可行性和有效性,并基于该模型和低仰角低空测试数据反演得到近地空间数据估计值,对工作频率、轨道高度以及环境湿度等影响大气闪烁的因素进行计算与仿真,为低仰角近地空间远距离通信的链路预算提供了参考依据。

According to the low elevation measured data in low altitude airship flight,the paper demonstrates Van de Kamp model to estimate troposphere scintillation attenuation in low elevation transmission link.Based Van de Kamp model and practical measured data,the estimated value of near-space data are deduced.Meanwhile main factors which affect the attenuation characteristics including frequency,orbital altitude and environmental humidity in near-space communication link are computed and simulated,which offers references for design in low elevation transmission in near-space communication link.