摘要
针对连续旋转型偏振成像系统Stocks测量模型,对该模型受起始曝光角误差、检偏片转速不均、光轴偏转等因素进行分析,提出了基于连续旋转的准实时偏振探测系统成像设计约束条件,结合实际情况介绍了基于滑动窗口的偏振维信息计算方法,利用所建模型仿真分析了影响测量存在的各类误差。结果表明,曝光角大小对偏振维信息获取不会造成大的影响,转速不均匀对Stocks参量的影响随着转速增加而减小,为保证Stocks参量误差小于0.01,起始检偏角校准误差绝对值应小于0.573°,光轴偏转角绝对值应小于11.422°。
Aiming at the Stocks measurement model of continuous rotation polarization imaging system,the factors that affect the model are analyzed,such as initial exposure angle error,uneven rotation speed of polarizer,optical axis deflection,and puts forward the imaging design constraints of a quasi-real-time polarization detection system based on continuous rotation.Combined with the actual situation,the calculation method of polarization dimension information based on a sliding window is introduced,and various errors affecting the measurement are simulated and analyzed by using the established model.The results show that the size of the exposure angle will not have a great impact on the acquisition of polarization dimension information,and the influence of uneven rotation speed on the stocks parameter decreases with the increase of rotation speed・To ensure that the error of the Stocks parameter is less than 0.01,the absolute value of the initial deviation angle calibration error should be less than 0.573°,and the absolute value of the optical axis deflection angle should be less than 11.422°.
作者
马一哲
王世勇
雷腾
李范鸣
MA Yizhe;WANG Shiyong;LEI Teng;LI Fanming(Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai,China;University of Chinese Academy of Sciences,Beijing,China;Laboratory of Infrared Detection and Imaging Technology,Chinese Academy of Sciences,Shanghai,China)
出处
《光电技术应用》
2022年第5期82-87,102,共7页
Electro-Optic Technology Application
关键词
偏振
分时系统
成像模型
误差分析
polarization
time-sharing system
imaging model
the error analysis
