基于高速飞行器流场光传输数据和变形镜系统, 提出了一种气动光学效应半实物仿真方法。根据流体力学、统计、几何和物理光学等理论, 建立远场目标的光学传输模型, 获得气动光学效应引起的目标光波的波前畸变数据, 控制变形镜系统调制光波来仿真生成畸变。完成了初步验证, 建立了一个超音速飞行模型(马赫数Ma=5)并进行了仿真实验, 计算了实验的波前仿真误差, 并分析了成像偏移和模糊特性。对高速飞行中的气动光学效应进行仿真, 在实验室条件下实现对相关成像系统性能和校正技术的测试。

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.