主要研究激光束在盐水和沙子两种下垫面上方传输时的波前特性,并采用自适应光学系统对波前畸变进行校正。建立了激光传输实验平台,基于自适应光学系统的输入输出数据建立了自适应光学系统模型,基于该模型设计了自适应光学系统闭环控制器,对比了激光束在两种下垫面上方传输时的波前畸变特性与自适应光学系统校正的差异。实验结果显示,在同样辐射加热的条件下,沙面上方的空气湍流对激光束波前影响更剧烈;经自适应光学系统校正后,波前传感器点位移方差在盐水情况下减少了28%,而在沙子情况下减少了10%。该研究为在海洋环境中利用闭环自适应光学系统进行光束波前畸变校正的可行性做出了初步探索。 The wavefront characteristics of the laser beam when it is transmitted over the two kinds of underlying surfaces, such as salt water and sand, are studied. The adaptive optical system is used to correct the wavefront distortion. The experimental platform of laser transmission was established. Based on the input and output data of the adaptive optics system, an adaptive optical system model was established. Based on the model, an adaptive optical system closed-loop controller was designed. When the laser beam was transmitted above the two underlying surfaces The difference between the wavefront distortion characteristics and the adaptive optics system correction. The experimental results show that under the same radiant heat condition, the air turbulence above the sand surface has a more severe effect on the laser beam wavefront. After adaptive optical system calibration, the variance of the displacement of the wavefront sensor is reduced by 28% While in the case of the sand there is a reduction of 10%. The research has initially explored the feasibility of using a closed-loop adaptive optics system for beamfront distortion correction in a marine environment.