基于单目激光数字摄影系统的高速目标测试算法优化

Optimization of High Speed Target Test Algorithm Based on Monocular Laser Digital Photography System

为了提高超高速物体运动速度的测量精度,在分析高速摄影系统测试过程的基础上,加入校正量δ对传统计算模型进行优化。结合优化前、后的两种模型,在不同速度区间、校正量δ、相机和反射屏距离hz等条件下,对运动物体的理论弹道和实际弹道的速度进行仿真。分析可知所提模型对于高速、超高速物体的运动速度模型具有很好的修正效果,且对于运动速度越快的模型修正效果越好;并对距离与测量误差间的关系进行研究,得到当h_z值大于30 m时,相对偏差小于1%。外场测试结果与建立的计算模型和仿真模型均相符。

To improve the measurement accuracy of objects moving at ultrahigh speeds,a correction amountδis added to optimize the traditional calculation model based on analyzing the test process of a high speed photography system.Combining the two models before and after optimization,the theoretical and actual trajectory velocities of moving objects are simulated under different speed intervals,correction amountδ,distance between camera reflection screen hz,and other important parameters.The analysis shows that the proposed model exhibits accurately corrected movements of high speed and ultrahigh speed objects,and the correction effect improved with the increasing model speed.Analyzing the relationship between the distance and the measurement error reveals that when the h_z value is greater than 30 m,the relative deviation is less than 1%.The field test results are consistent with the proposed calculation model and simulation model.