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中国科学院 西安光学精密机械研究所,陕西 西安,710119
收稿日期:2012-08-27,
修回日期:2012-11-19,
网络出版日期:2013-03-20,
纸质出版日期:2013-03-15
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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.
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。
To measure the spatial azimuths of different instruments in the upper and lower planes rapidly
an anglemeasuring system based on magnetooptical modulation and a polarization splitter was proposed. An anglemeasuring model of the system was deduced by describing the Jones vector of polarized light
and the influence of light source fluctuation on the anglemeasuring 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 optoelectronic elements in two optical paths on the measurement precision were discussed. Finally
a magnetooptical modulation method was proposed to eliminate the difference of transmittances and gain coefficients of the two signals for the achievement of highprecision measurement. The experimental observation demonstrates that the measurement time is 15 s and anglemeasuring 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.
董晓娜. 方位垂直传递技术的研究[D].西安:中国科学院西安光学精密机械研究所,2001.DONG X N. The Research on Technique of Passing Azimuth Angle Vertically [D].Xi′an:Xi′an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, 2001. (in Chinese)[2]吴易明,高立民,陈良益.基于偏振光的精密角度测量及传递技术[J].红外与激光工程,2008,37(3): 525-529.WU Y M, GAO L M, CHEN L Y. Precision measurement and transmission of azimuthal information based on polarization modulated light [J]. Infrared and laser Engineering, 2008, 37(3): 525-529 . (in Chinese) [3]杨志勇,周召发,张志利.贝赛尔函数展开对空间方位失调角测量误差的影响[J]. 应用光学,2012,33(3):461-465.YANG ZH Y, ZHOU ZH F, ZHANG ZH L. Influence of Bessel functions expansions on azimuth measurement error [J]. Journal of Applied Optics, 2012, 33(3): 461-465. (in Chinese)[4]杨志勇,黄先祥,周召发,等. 基于磁光调制偏振光的空间方位失调角高精度测量新方法[J]. 光学学报, 2011,31(11):166-170.YANG ZH Y, HUANG X X, ZHOU ZH F, et al.. New high-precision method of measuring spatial azimuth based on magneto-optic modulation polarized light [J]. Acta Optica Sinica, 2011,31(11): 166-170. (in Chinese)[5]杨志勇,周召发,张志利. 基于正弦波磁光调制的空间方位失调角传递技术的改进[J].光学 精密工程,2012,20(4):692-698.YANG ZH Y, ZHOU ZH F, ZHANG ZH L. Improvement of transmitting spatial azimuth based on sine wave magneto-optic modulation [J]. Opt. Precision Eng., 2012,20(4): 692-698. (in Chinese)[6]孟甜甜,符照森,刘辉,等. 基于磁光调制原理的高精度偏振角测量方法模拟与实验研究[J].西北大学学报:自然科学版,2011,41(6):964-968.MENG T T,FU ZH S,LIU H, et al.. Modeling and experimental study on a high precision polarization measurement based on magneto-optical modulation [J]. Journal of Northwest University (Natural Science Edition), 2011, 41(6): 964-968. (in Chinese) [7]李小俊,李永安,汪源源,等. 基于矩形波信号的磁光调制偏振测量方法[J].光学学报,2008,28(8):1533-1537.LI X J, LI Y A,WANG Y Y, et al.. Magneto-optical modulation method for polarization measurement based on rectangular wave signal[J]. Acta Optica Sinica, 2008,28(8): 1533-1537. (in Chinese)[8]李红霞,吴福全.偏光棱镜调制器调制光强扰动的理论分析[J]. 光学学报, 2003,23(12):1456-1459.LI H X, WU F Q. An analytical study on modulated intensity′s perturbance for the polarizing prisms[J]. Acta Optica Sinica, 2003, 23(12):1456-1459. (in Chinese)[9]姚海涛,李国华,彭捍东,等. Wollaston棱镜分束角和光强分束比的研究[J].曲阜师范大学学报, 2008,34(2):51-54.YAO H T, LI G H, PENG H D, et al..The splitting angle and light intensity splitting ratio of wollaston prism within its viewing field angle[J]. Journal of Qufu Normal University, 2008, 34(2):51-54 (in Chinese)[10]朱化凤. 激光偏光棱镜对输出光强的影响[D].曲阜:曲阜师范大学,2003.ZHU H F. The Effect of Laser-Polarizing Prism of the Output Light Intensity [D]. Qufu: Qufu Normal University,2003. (in Chinese)
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