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Analysis and research of polarization aberration in rapid space angle measuring system
其他题名快速空间测角系统中偏振像差的分析与研究
Li Chun-Yan1; Lu Wei-Guo2; Qiao Lin1
作者部门光学定向与测量技术研究室
2018-02-05
发表期刊ACTA PHYSICA SINICA
ISSN1000-3290
卷号67期号:3
产权排序2
摘要

The precise angle measurement and transmission technology have been widely used in the precision measurement, aerospace, military, biomedicine and other devices, which are based on the polarized light and magneto-optical modulation. This method has the characteristics of no rigid connection required, long distance transmission, high precision, etc. However, the azimuth information measurement method needs the assistance of complex servo tracking system according to the orthogonal extinction principle of polarization prism, meanwhile, the measurement time is longer, which reduces reliability and reaction sensitivity of the system. In order to improve the measurement accuracy and fast response capability of the system, a fast space goniometry method is proposed through the Wollaston prism polarizing beam splitter, with which the azimuth is directly calculated according to the two light intensities. The measurement time can be shortened, and the accuracy is improved by the use of magneto-optical modulation technology. The rapid space angle measuring system needs to realize the measurement function in a certain translation range, which requires the beam to have a certain coverage area in the receiving unit. However, the system is limited by size and volume of the device; we can only choose to expand the incident beam. Therefore, when the beam is incident onto the receiving unit, some incident angle and azimuth, that is, non-vertical incidence will be produced. However, the polarization of the non-vertically incident light passing through the system will change and polarization aberration exists, which will lead to measurement error. In this paper, the beam passes through the polarizing prism in a certain range of azimuths and incident angles, and the polarized light tracing method and the boundary condition of the electromagnetic field are used to study and simulate the polarization change and distribution of the outgoing beam. The changes of different incident azimuths and angles can be simulated through the translation of receiving unit, and the azimuths can be measured indirectly by using self-collimation theodolite and right angle prism. By comparing the measured azimuths under the translational and centering conditions, the influence of polarization aberration on the angle measuring system and the correctness of the theoretical analysis are verified. It is concluded that when the azimuth angle is 0 degrees, the measurement error is small; when the azimuth is 90 degrees, the measurement error is largest, meanwhile the measurement error will increase with the translation distance becoming longer (i.e., the incident angle). According to the comparison between the experimental data and the simulation results, the existing problems are pointed out, and the corresponding improvement measures are proposed. The results of this work have some significance in guiding the optimization of the system structure, and the further improvement inthe performance of the system.

 

关键词Polarized Light Azimuth Measurement Polarization Aberration Glan-taylor Prism
学科领域Physics, Multidisciplinary
DOI10.7498/aps.67.20171702
收录类别SCI ; EI ; CSCD
语种中文
WOS记录号WOS:000425272200006
CSCD记录号CSCD:6192343
EI入藏号20182005188665
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30761
专题光学定向与测量技术研究室
作者单位1.Xian Univ Posts & Telecommun, Sch Elect Engn, Dept Optoelect Technol, Xian 710121, Shaanxi, Peoples R China;
2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Li Chun-Yan,Lu Wei-Guo,Qiao Lin. Analysis and research of polarization aberration in rapid space angle measuring system[J]. ACTA PHYSICA SINICA,2018,67(3).
APA Li Chun-Yan,Lu Wei-Guo,&Qiao Lin.(2018).Analysis and research of polarization aberration in rapid space angle measuring system.ACTA PHYSICA SINICA,67(3).
MLA Li Chun-Yan,et al."Analysis and research of polarization aberration in rapid space angle measuring system".ACTA PHYSICA SINICA 67.3(2018).
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