光电探测系统半参数模型运动学标定

发布时间：2018-04-08 12:02

本文选题：探测器　切入点：光电探测系统　出处：《光学学报》2016年01期

【摘要】：针对光电探测系统高指向精度要求,提出了补偿最小二乘法与双三次样条插值相结合的半参数模型标定算法来减小系统指向误差。根据光电探测系统结构组成,运用多体系统理论建立系统指向误差参数模型。引入非参数分量,建立半参数模型,应用补偿最小二乘法对半参数模型进行标定得到修正模型。搭建实验平台测得两组数据,分别用于运动学标定与验证修正结果。实验结果表明:系统方位向、俯仰向指向误差均值从92.1185″、75.9358″降低到2.7100″、2.7755″,指向误差标准差从21.6522、15.1744降低到10.8645、10.7305。表明提出的标定算法能有效提高光电探测系统指向精度和空间指向稳定性,且能同时考虑系统误差的线性与非线性关系。
[Abstract]:In order to reduce the pointing error of the photoelectric detection system, a semi-parametric model calibration algorithm combining the compensated least square method and the bicubic spline interpolation is proposed to reduce the pointing error of the system.According to the structure of the photoelectric detection system, the system pointing error parameter model is established by using the multi-body system theory.The semi-parametric model is established by introducing the nonparametric component, and the modified model is obtained by the calibration of the semi-parametric model by the compensatory least square method.Two sets of data were constructed and used to calibrate and verify the results of kinematics calibration.The experimental results show that the mean error of azimuth and pitching direction of the system is reduced from 92.1185 "75.9358" to 2.7100 "/ 2.7755", and the standard deviation of pointing error is reduced from 21.6522 / 15.1744 to 10.8645/ 10.7305 ".It is shown that the proposed calibration algorithm can effectively improve the pointing accuracy and spatial direction stability of the photoelectric detection system, and the linear and nonlinear relationship of the system error can be considered at the same time.
【作者单位】：中国科学院长春光学精密机械与物理研究所飞行器部;中国科学院大学;徐州徐工随车起重机有限公司;
【基金】：中国科学院三期创新工程资助项目(YYYJ-1122)
【分类号】：TN29

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