弹道跟踪转镜成像研究

Study on the Image Tracked by Mirror in Trajectory

运动目标姿态与速度是靶场测量的重要内容,使用跟踪转镜解决了固定高速摄像机拍摄弹丸轨迹较短的状况.根据弹丸的运动规律和成像关系转化为转镜的转动规律,使得拍摄系统工作时偏心量时刻为零.另外还要考虑到电机和系统成像要求等.系统最终能达到在整个跟踪过程中,弹丸成像长度占CCD像面长度的1/5~3/5,弹丸成像不超出CCD像面区域,跟踪视场角度达到90°.

The speed and posture of moving targets are an important matter in range measurement,using mirror to solve the problem of short trajectory tracked by the fixed high-speed camera.According to the moving discipline of projectile and relationship of imaging,the moving discipline of the mirror can be got,and so the eccentricity moment of the camera is zero any time.In addition there is another concern of motor and system request to be considered.Finally this system can get a whole procedure of the flying projectile,the length of image is in the rang of 1/5 to 3/5 of the CCD length,the angle of tracking area can reach to 90°.