基于激光阴影照相系统的研究

针对目前高速弹丸飞行参数测量系统采用被动光源存在的光源能量利用率低、对环境敏感等问题，研究了一种组合式主动激光阴影照相系统。在对系统理论分析的基础上建立了高速弹丸的空间位置模型和2种测速模型。搭建了激光阴影照相系统试验平台，对系统设计的合理性进行了检验。试验结果表明:2种测速模型都能实现对弹丸飞行速度的测量，并且2种方法的对比误差比较小；弹丸空间位置在X轴方向的均方差为0.795 mm，在Z轴方向的均方差为0.496 mm。与纸靶的测量结果相比，偏离程度在1 mm范围内；该系统能够实现对弹丸飞行参数的测量。

Research on laser shadow photography system

Aiming at the problems of low energy utilization and environmental sensitivity of passive light source adopted in high-speed projectile flight parameter measurement system,a combined active laser shadow photography system was studied.Based on the theoretical analysis of the system,the space position model and two velocity measurement models of high-speed projectile were established.The experimental platform of laser shadow photography system was built and the rationality of the system design was tested.The test results show that the both models can measure the flight speed of projectile,and the comparison error between the two methods is small.The mean square deviation of the projectile space position in X-axis is 0.795 mm and that in Z-axis is 0.496 mm.Compared with the results of paper target,the deviation degree is within 1 mm,and the system can measure the flight parameters of the projectile.