【摘要】 为了克服近地面湍流对几十到几百米中长成像距离下光学系统成像质量的不利影响，设计了基于长焦距望远物镜和一体化自适应模块的光学成像系统。在系统中心高度1.9 m及50～200 m的成像距离下，开展了分辨率板的室外成像实验。实验结果表明，在近地面的50～200 m中长距离下湍流对成像质量的影响明显，所搭建的实验系统能够在不同距离下有效克服湍流影响，提高图像的分辨率和清晰度的一致性，但随着成像距离的增加，湍流影响的增大，系统的校正能力降低，成像质量下降。系统在100 m成像距离下的成像分辨率能够达到0.5 mm。在200 m的距离对混凝土模型表面裂缝进行了观测及校正实验，实验结果表明，系统能够抑制湍流影响，提高裂缝图像的清晰度，验证了系统的实际应用能力。更多还原

【Abstract】 In order to overcome the adverse effects of near-ground turbulence on the imaging quality of the optical systems at imaging distances of tens to hundreds of meters, an optical imaging system based on a long focal length telescopic objective lens and an integrated adaptive module is designed. With a system center height of 1.9 m and the imaging distance of 50-200 m, the outdoor imaging experiment of a resolution plate is carried out. The experimental results show that the influence of turbulence on imaging quality is obvious at medium and long distances of 50-200 m near the ground. The experimental system can effectively overcome the influence of turbulence at different distances and improve the consistency of image resolution and clarity. As the imaging distance increases, the influence of turbulence increases, and the system’s correction ability and the imaging quality decrease. The imaging resolution of the system can reach 0.5 mm at an imaging distance of 100 m. Cracks on the surface of a concrete model are observed and corrected at a distance of 200 m. The experimental results show that the system can suppress the influence of turbulence and improve the clarity of the image, which verifies the practical application ability of the system.更多还原