基于转镜运动补偿的弹丸同步摄影技术研究

Research on the technology of projectile synchronized photography based on motion compensation for rotating mirror

弹丸的空间飞行姿态是武器性能的一项重要指标。为了使数字摄影相机实现对高速运动弹丸运行轨迹的成像,设计了一种基于转镜运动补偿的弹丸同步摄影装置。在高速数字相机前设置一面反射转镜,当弹丸进入跟踪视场时,利用转镜的旋转补偿弹丸的空间运动,使得由转镜反射到相机像面的弹丸图像偏移在许可范围内,实现同步摄影过程。实验证明该方法能够满足常规弹丸同步摄影的需求。

The flight attitude of projectile in space is a very important performance evaluation indicator of weapons in target range test. In order to obtain images of fast-moving projectiles with a digtial camera, a projectile synchronous camera system is designed based on rotary mirror moving compensation. A reflection rotary mirror is set in front of a high speed digtal camera, and when the projectile passes the field, the camera image obtained from the reflection rotary mirror is appropriated by using rotary mirror to compensate the projectile moving in space controlled by a servo system, and the synchronized photographic process is finally achieved. With this method as the theoretical basis to establish mirror equation of motion, the tracking data discretization mathematical model is obtained through the analysis of the imaging error. The method provides theoretical basis for the system of projectile synchronized photography based on motion compensation for rotating mirror.