激光与光电子学进展, 2013, 50 (4): 041201, 网络出版: 2013-03-22
基于PSD的长距离多阴影照相站的空间坐标一致性标定方法
Method for Calibrating the Spatial Coordinate Coherence of Shadowgraph-Taking Camera Stations at Long Distance with PSD
测量 光学测量 空间坐标一致性 阴影照相站 位置敏感探测器 measurement optical testing spatial coordinate coherence shadowgraph-taking camera station position sensitive detector
摘要
目前弹丸运动姿态测量的主要方法是对多阴影照相站抓拍的系列图像进行处理分析,而只有当多阴影照相站处在同一空间坐标系中时,才能将系列图像的特征点与该点对应的空间坐标联系起来,从而得到准确的结果。针对这一问题,利用位置敏感探测器(PSD),提出一种长距离多阴影照相站的空间坐标一致性标定方法。分析了该标定方法的测量精度和重复性。搭建了一套系统并开展了相关实验,实验结果表明,该标定方法的位置校准误差小于0.1 mm。
Abstract
The main method of the attitude measurement is to get series of graphs for analyzing the changing attitude of the projectile by utilizing multiple shadowgraph-taking camera stations. However, the premise of accurate results is that feature points on graphs must match their spatial coordinates in a certain spatial coordinate. Aiming at this problem, we propose a method of calibrating the spatial coordinate coherence for the long distance and multiple shadowgraph-taking camera stations with position sensitive detector (PSD), and analyze the measurement accuracy and repeatability of this method. A system is developed to do some regular experiments. According to the results, the accuracy of this calibration method is superior to 0.1 mm.
王小锋, 沈华, 李建欣, 朱日宏, 黄亚, 荣四海. 基于PSD的长距离多阴影照相站的空间坐标一致性标定方法[J]. 激光与光电子学进展, 2013, 50(4): 041201. Wang Xiaofeng, Shen Hua, Li Jianxin, Zhu Rihong, Huang Ya, Rong Sihai. Method for Calibrating the Spatial Coordinate Coherence of Shadowgraph-Taking Camera Stations at Long Distance with PSD[J]. Laser & Optoelectronics Progress, 2013, 50(4): 041201.