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现代靶场中主要采用狭缝摄影技术测量弹丸出膛后的速度、攻角和转速等运动参数,近些年来,采用数字线阵像机代替传统的胶片式相机是目前狭缝摄影的研究方向。对此,本文设计了一种单台线阵像机配合双像器实现等效双像机正交交会测量弹丸的系统,并根据弹丸目标的外形特点,构建了利用圆柱数学模型的弹丸运动参数最优化模型,通过优化算法进行模型求解获得弹丸方位、速度参数,进而求取攻角;设计了一种新的标记线方法,可简单精确地计算弹丸转速。通过仿真实验,验证了本文提出的参数估计方法的精确性。
In modern shooting range, slit motion photography is mainly used to measure the velocity, angle of attack and rotational speed of the projectile after it is discharged. In recent years, digital linear array camera instead of the traditional film camera is the research direction of slit photography. In this paper, this paper designed a single line array camera with the double camera to achieve the equivalent dual-camera orthogonal intersection measurement projectile system, and according to the projectile target shape features, the use of cylindrical mathematical model of the projectile motion parameters Optimize the model, obtain the azimuth and velocity parameters of the projectile through the optimization algorithm, and then get the angle of attack. A new marking line method is designed to calculate the projectile speed quickly and accurately. The simulation experiment verifies the accuracy of the proposed method.