单线阵CCD光电测试系统测量精度评估方法
2019-03-14
作者：倪晋平1，杨久琪1，贾兆辉2，陈丁1，李海1
单位：1西安工业大学；2西安应用光学研究所
摘要：为了科学合理地评估单线阵CCD光电测试系统的性能，提出一种测量精度的评估方法。首先，分析激光光源与光学镜头主点沿水平方向的距离、投影板与光学镜头主点的竖直距离、光学镜头焦距三种光学结构参数对测量误差的影响；然后，讨论坐标测量误差随x和y坐标值变化而变化的趋势，并推导误差公式。通过模拟实弹验证可知，靶面为1m×1m时，坐标x、y测量误差Δx、Δy的均值分别为-5.6mm和15.2mm，且x坐标测量误差的标准差σx为4.5mm，y坐标测量误差的标准差σy为14.3mm。模拟实弹试验结果与理论分析结果基本一致，证明该评估方法正确可行。
关键词：靶场测试；弹丸命中坐标；光电测试系统；坐标测量
中图分类号：TG806；TH741；TJ012.3文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.03.029
Evaluation Method for Measurement Accuracy of Single Linear Array
CCDbased Photoelectric Test System
Ni Jinping，Yang Jiuqi，Jia Zhaohui，Chen Ding，Li Hai
Abstract:To evaluate the performance of a single linear array CCDbased photoelectric test system scientifically and reasonably，a method for evaluating the accuracy of the hit coordinate measurement is proposed.First，the three principal parameters of the measurement accuracy，including the laser and the principal point of the lens on the horizontal direction，the vertical distance between the projection plate and the principal point of the lens，and the focal length of the lens，are analyzed.The trend of coordinate measurement errors with the change of x and y coordinate values are discussed，and the formulas of the measurement errors are deduced. Through the simulated projectile experiment in a 1m×1m target area，the mean values of xcoordinate and ycoordinate measurement errors Δx and Δy are 5.6mm and 15.2mm，respectively. The standard deviation of xcoordinate measurement error σx is 4.5mm，and that of ycoordinate measurement error σy is 143mm.The results are consistent with the theoretical analysis results，and it is proved that the evaluation method is correct and feasible.
Keywords:shooting range test；projectile hit coordinate；photoelectric test system；coordinate measurement