飞秒激光跟踪仪跟踪脱靶量零位标定方法

发布时间：2018-03-14 21:15

本文选题：飞秒激光跟踪仪　切入点：角反射器　出处：《红外与激光工程》2017年01期 　论文类型：期刊论文

【摘要】：飞秒激光跟踪仪通过PSD探测脱靶量实现目标跟踪,脱靶量零位是跟踪激光指向反射靶球的中心时反射激光在PSD上输出的光斑位置,跟踪时以脱靶量零位作为基准计算目标脱靶量,因此如何准确标定脱靶量零位是仪器实现精确测量的前提。文中在分析角反射器特性的基础上,结合仪器自身特点提出了一种基于角反射器的飞秒激光跟踪仪跟踪脱靶量零位标定方法。分析了脱靶量零位误差对仪器指向精度的影响;建立了跟踪脱靶量标定误差模型;根据仪器结构设计和轴系几何误差对脱靶量零位标定方法进行了仿真,结果显示,其误差小于17.8μm,当目标距离仪器10 m时,仪器的指向误差小于1.1″,该结果对系统误差补偿模型建立奠定了基础。最后,基于实际装置对仪器的脱靶量零位进行了标定,为后续仪器的动态测量提供了跟踪基准。
[Abstract]:The femtosecond laser tracker realizes target tracking by detecting miss distance by PSD. The zero position of miss distance is the spot position of laser output on PSD when tracking laser pointing to the center of reflecting target ball. In tracking, the target miss distance is calculated by using the zero position of miss distance as the reference, so how to accurately calibrate the zero position of miss distance is the premise of the instrument to realize the accurate measurement. Based on the analysis of the characteristics of the angular reflector, According to the characteristics of the instrument, a calibration method of tracking miss zero of femtosecond laser tracker based on angle reflector is proposed. The influence of zero position error of miss distance on the pointing accuracy of the instrument is analyzed, and the calibration error model of tracking miss distance is established. According to the design of the instrument structure and the geometric error of the shaft system, the calibration method of the miss distance zero position is simulated. The result shows that the error is less than 17.8 渭 m, and when the target distance is 10 m, the error is less than 17.8 渭 m. The pointing error of the instrument is less than 1.1 ", which lays a foundation for the establishment of the system error compensation model. Finally, the zero miss distance of the instrument is calibrated based on the actual device, which provides a tracking reference for the dynamic measurement of the subsequent instrument.
【作者单位】：长春理工大学光电工程学院;中国科学院光电研究院;北京信息科技大学仪器科学与光电工程学院;
【基金】：国家重大科学仪器设备开发专项(No.11YQ120022)
【分类号】：TH744.5

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