Influence of atmosphere turbulence on satellite -to-ground laser communication link

The laser communication link system between the ground station and the orbit satellite is inevitably subject to the atmospheric turbulence, which often leads to message error at receiver or communication interruption. Based on the Born approximation and the Rytov method, the characteristics of the light field on the receiver plane was derived when the laser beam propagated through the turbulent atmosphere by the slant path. At the same time, using the McGlamery algorithm, the atmosphere turbulence phase screen under the Kolmogorov power spectrum was numerically simulated. Based on the simulated phase screen and the Huygens-Fresnel principle, the McGlamery algorithm mainly used to simulate the phase screen of the plane wave was extended to the Gaussian beam propagation. Finally, it is concluded that the atmosphere turbulent channel has a significant impact on the satellite-toground laser communication link systems, and the result indirectly illustrates the McGlamery algorithm is valid to simulate the wave-front of Gauss beam.