星-地激光大气湍流传输的时域特性模拟

摘要

The effects of atmosphere turbulence in different heights are simulated by using multi-phase screen meth-od.And phase screen is generated through the interpolation algorithm based on the phase covariance meth-od.Atmospheric turbulence change with time is simulated.Optical intensity change with time is simulated under differ-ent diameters of downlink receiving antenna and different diameters of uplink Gauss beam.In addition,the received optical intensity signals are analyzed in time domain and frequency domain.%首先采用多相位屏的方法对大气湍流进行模拟，接着采用基于协方差的插值方法产生足够长的湍流相位屏，以模拟大气湍流随时间的变化。在下行链路地面接收天线直径和上行高斯光束直径分别不同的情况下，数值模拟光强度随时间的变化，并对接收到的光强度信号分别进行时域和频域的分析。