中国科学院南京天文光学技术研究所机构知识库

This paper focuses on the phase distortion problem caused by atmospheric turbulence and conducts research based on  titanium alloy metal adaptive ultra-thin mirrors by using numerical simulation and modeling methods. Specifically, the  Zernike polynomial method was adopted to simulate the distorted wavefront of atmospheric turbulence, and the simulation  results were verified. Based on the finite element analysis results of the metal ultra-thin mirror, the influence function of a  single actuator was fitted using the super-Gaussian function. The correlation coefficient for the matching degree of the  obtained influence function exceeded 0.9. Then, the distorted wavefront was corrected by the fitted influence function.  After correction, the root means square value (RMS) of the distorted wavefront decreased by 77.56%, which verified the  feasibility of correcting wavefront distortion with titanium alloy metal mirrors.