Rapid measurement of spatial azimuth by using polarized light

LU Wei-guo; WU Yi-ming; GAO Li-min; XIAO Mao-sen; WANG Hai-xia

doi:10.3788/OPE.20132103.0539

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Rapid measurement of spatial azimuth by using polarized light

更新时间：2020-08-12

- Rapid measurement of spatial azimuth by using polarized light
- Optics and Precision Engineering Vol. 21, Issue 3, Pages: 539-545(2013)
- 作者机构：
  
  中国科学院西安光学精密机械研究所,陕西西安,710119
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132103.0539
  CLC： O436.3;TH741.2
- Received：27 August 2012，
  
  Revised：19 November 2012，
  
  Published Online：20 March 2013，
  
  Published：15 March 2013
- 稿件说明：
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陆卫国吴易明高立民肖茂森王海霞. 利用偏振光实现空间方位角的快速测量[J]. 光学精密工程, 2013,21(3): 539-545

LU Wei-guo WU Yi-ming GAO Li-min XIAO Mao-sen WANG Hai-xia. Rapid measurement of spatial azimuth by using polarized light[J]. Editorial Office of Optics and Precision Engineering, 2013,21(3): 539-545
陆卫国吴易明高立民肖茂森王海霞. 利用偏振光实现空间方位角的快速测量[J]. 光学精密工程, 2013,21(3): 539-545 DOI： 10.3788/OPE.20132103.0539.

LU Wei-guo WU Yi-ming GAO Li-min XIAO Mao-sen WANG Hai-xia. Rapid measurement of spatial azimuth by using polarized light[J]. Editorial Office of Optics and Precision Engineering, 2013,21(3): 539-545 DOI： 10.3788/OPE.20132103.0539.

摘要

为了实现上下不同平面内仪器方位角的快速测量，基于磁光调制和偏振分束构建了一种角度测量系统。根据偏振光的琼斯矢量描述方法推导出了系统的测角模型，并采用差除和的办法消除光源波动以提高测角精度。分析了渥拉斯顿棱镜的两路光信号透射比与入射角、方位角的关系及其对测量结果的影响，讨论了由双光路光电器件的光信号衰减、器件漂移和电路性能的不同带来的增益差异与测量结果的相关性。最后，提出了采用磁光调制的方法来消除两路信号的透射比系数和增益系数的差，从而提高仪器测量精度。实际系统测量实验表明：系统完成测角时间为15 s，在+8～-8内测角精度优于5。结果显示该系统具有稳定性高、测角速度快、精度高等特点。

Abstract

To measure the spatial azimuths of different instruments in the upper and lower planes rapidly

an anglemeasuring system based on magnetooptical modulation and a polarization splitter was proposed. An anglemeasuring model of the system was deduced by describing the Jones vector of polarized light

and the influence of light source fluctuation on the anglemeasuring precision was eliminated through signal processing method of difference divided by addition. Then

the relationships between the transmittance and the incidence angle

azimuth for the two pathways of optical signals from the Wollaston prism were analyzed

as well as their effects on the measurement results. Furthermore

the dependence of gain differences from optical signal attenuations

device drifts

and circuit performance of optoelectronic elements in two optical paths on the measurement precision were discussed. Finally

a magnetooptical modulation method was proposed to eliminate the difference of transmittances and gain coefficients of the two signals for the achievement of highprecision measurement. The experimental observation demonstrates that the measurement time is 15 s and anglemeasuring accuracy is better than 5" within +8～-8. These results show that the proposed method has some advantages on the fast angular measurement velocity

high precision

and so on.

关键词

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references

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Related Author

Chun-yan LI

Wei-guo LU

Lin QIAO

XIAO Mao-sen

LU Wei-guo

GAO Li-min

WU Yi-ming

Related Institution

Department of Optoelectronic Technology, School of Electronics Engineering, Xi'an University of Posts and Telecommunications

Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences

中国科学院大学

Xi′an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi′an

University of Chinese Academy of Sciences

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