基于变形镜的气动光学效应仿真实验研究

A semi physical simulation method for supersonic aero-optic effects is presented. This method is based on optical transmission data of flow field in high-speed flight and deformable mirror system. An optical transmission model for the far-field target, according to theories of computational fluid dynamics, statistics, geometrical and physical optics, is established to obtain the wavefront aberration data, which is the input of the to the deformable mirror system to control wavefront modulation. A preliminary validation experiment is carried out with a supersonic flight model (Ma=5), the simulation errors of the experimental wavefront are calculated and the imaging characteristics of shifting and blurring are analyzed. The present method simulate the aero-optical effects in high speed flight effectively, and can be used for the test of the performance of imaging system and the photoelectric correction ability under laboratory conditions.