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在现代发射轨道空间弹丸飞行姿态研究中,通过轨道上的多组阴影相机基站瞬态捕捉弹丸姿态图像数据,对图像数据进行处理计算可以获得弹丸的飞行轨迹数据。因此,阴影相机的空间坐标校正对飞行姿态数据的获取以及测量精度有着重要的影响。针对传统悬线型基准系统校正误差大以及因每组相机间独立校正而导致的空间几何坐标校正一致性低的问题,基于光电位置传感器和光学杠杆原理,设计了新型阴影相机空间几何坐标校正系统。阐述了该系统的理论背景、组成以及调校方法,并对该系统进行了实验分析。实验结果表明,采用该系统校正阴影相机俯仰角精度优于10″,单组相机校正实验测量结果误差不超过0.06mm,多组相机校正一致性误差不超过0.1mm。
In the research of projectile flight attitude of modern launch orbit space, the projectile flight trajectory data can be obtained through the transient capture of projectile attitude image data from multiple shadow camera base stations in the orbit. Therefore, the space camera coordinate correction of the camera attitude data acquisition and measurement accuracy has a significant impact. Aiming at the problem that the calibration error of the conventional suspension linear reference system is large and the spatial geometric coordinate calibration consistency is low due to the independent calibration between the cameras in each group, a new type of geometric coordinate calibration system of the shadow camera is designed based on the photoelectric position sensor and the optical lever principle . The theoretical background, composition and adjustment methods of the system are expounded, and the system is analyzed experimentally. Experimental results show that using this system to correct shading camera pitch angle accuracy better than 10 ", single group camera calibration experiment measurement error does not exceed 0.06mm, multiple camera calibration consistency error does not exceed 0.1mm.