地面对卫星瞄准精度受大气湍流的影响分析

分析了地面对卫星激光瞄准精度受大气湍流效应的影响。首先，提出了大气湍流作用下地面对卫星激光瞄准精度的概念。其次，采用多层相位屏的数值方法求解激光大气传输满足的抛物型方程，仿真研究了不同发射参数下地面对卫星的激光瞄准精度，结果表明:地面对卫星的激光瞄准精度与激光束的发射口径成正比，发射口径越大，瞄准精度越高；而与激光束的发散角成反比，光束发散角越大，瞄准精度越低。最后，比较研究了不同瞄准精度下到达卫星入瞳处的功率以及功率密度。研究成果可为开展地面对抗卫星的试验提供理论依据和数据参考。

Influence of atmospheric turbulence on aim precision of ground-to-satellite

The influence of atmospheric turbulence on aim precision of ground-to-satellite was theoretically investigated in this paper. First of all, the definition of aim precision of ground-to-satellite laser was proposed in the atmospheric turbulence. Secondly, the aim precision of ground-to-satellite laser under the different launch parameters was numerically simulated by solving the parabolic equation of laser atmospheric propagation with multi-phase screen method. The results show that the aim precision of ground-to-satellite laser is proportional to the launch aperture of laser, but inversely proportional to the divergence angle of laser. The power and power density at the satellite's pupil were lastly calculated under the different aim precisions. The research conclusion can provide the theoretical basis and data reference for carrying out the countermeasure experiment of ground-to-satellite.