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Accurate measurement of absolute distance is crucial for developing the progressive military, aerospace, manufacturing large scientific instruments and other fields. Instead of the traditional phase discrimination scheme in general phase-shift distance measurement, the double polarization modulation range-finding system can simplify the simulation phase circuit, reduce the phase shift noise and improve the accuracy by using interference phase demodulation. The in-depth discussion of theoretical derivation and experimental verification are proposed based on the double polarization modulation range-finding system. The detailed theoretical analysis of optical structure is proposed, and the factors affecting the range accuracy are analyzed based on the theoretical formula of ranging result. Finally, the theoretical formula of range accuracy is obtained, and experimental validation is carried out. In this experiment, the wavelength of laser source is 735 nm, and the phase modulator is 4431 model from the Newport company. The ranging experiment is conducted in the modulation frequency ranges of 0.75-0.85 GHz, 2.7-2.8 GHz, 4.3-4.4 GHz, 6.1-6.2 GHz, and 7.8-7.9 GHz. Experimental results indicate that the measurement accuracy of phase-shift range-finding technology is improved with the increase of modulation frequency. Moreover, the accuracy is proportional to the parameter f/N, in which f is the modulation frequency uncertainty and N is an integer in our algorithm. With the appropriate modulation frequency, the range accuracy of the double polarization modulation range-finding system can reach up to 10-7.
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Keywords:
- laser distance measurement /
- double polarization modulation /
- variable frequency distance measurement /
- modulation frequency
[1] Hei K F, Yu J L, Wang J, Wang W R, Jia S, Wu Q, Xue J Q 2014 Acta Phys. Sin. 63 100602 (in Chinese) [黑克非, 于晋龙, 王菊, 王文睿, 贾石, 吴穹, 薛继强 2014 63 100602]
[2] Wu H Z, Cao S Y, Zhang F M, Xing S J, Qu X H 2014 Acta Phys. Sin. 63 100601 (in Chinese) [吴翰钟, 曹士英, 张福民, 邢书剑, 曲兴华 2014 63 100601]
[3] White N 2000 Nature 407 146
[4] Xu H, Li X Y, Xiao X, Li Z Y, Yu Y D, Yu J Z 2013 Chin. Phys. B 22 114212
[5] Shi G, Zhang F M, Qu X H, Meng X S 2014 Acta Phys. Sin. 63 184209 (in Chinese) [时光, 张福民, 曲兴华, 孟祥松 2014 63 184209]
[6] Song S B, Xu L P, Zhang H, Gao N, Shen Y H 2015 Chin. Phys. B 24 057201
[7] Meng Y S, Zhong X W, Yang S S 2008 Space Electronic Technology 3 51 (in Chinese) [蒙艳松, 钟兴旺, 杨姗姗 2008 空间电子技术 3 51]
[8] Reigber C, Schmidt R, Flechtner F, Konig R, Meyer U, Neumayer K H, Schwintzer P, Zhu S Y 2005 J. Geodyn. 39 1
[9] Wan Q Y, Zhou Z B 2008 Geophysical Geochemical Exploration 32 383 (in Chinese) [万庆元, 周泽兵 2008 物探与化探 32 383]
[10] Gueuning F, Varlan M, Eugene C, Dupuis P 1996 Instrumentation and Measurement Technology Conference Brussels, Belgium, June 4-6, 1996 p399
[11] Amann M C, Bosch T, Lescure M, Myllyla R, Rioux M 2000 Opt. Eng. 40 10
[12] Liu M, Yang X Y, Liu C J 2012 Chinese Journal of Laser 39 0208004 (in Chinese) [刘邈, 杨学友, 刘常杰 2012 中国激光 39 0208004]
[13] Webster D 1991 IEEE Trans. Instrum. Meas. 43 578
[14] Oiwa T, Shioda T, Tanaka Y, Takeda M, Kurokawa T 2007 Conference on Lasers and Electro-Optics/Pacific Rim Seoul South, Korea, August 26, 2007 ThG2-3
[15] Huang K N, Huang Y P 2008 Sensor. Actuat. A: Phys. 149 42
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[1] Hei K F, Yu J L, Wang J, Wang W R, Jia S, Wu Q, Xue J Q 2014 Acta Phys. Sin. 63 100602 (in Chinese) [黑克非, 于晋龙, 王菊, 王文睿, 贾石, 吴穹, 薛继强 2014 63 100602]
[2] Wu H Z, Cao S Y, Zhang F M, Xing S J, Qu X H 2014 Acta Phys. Sin. 63 100601 (in Chinese) [吴翰钟, 曹士英, 张福民, 邢书剑, 曲兴华 2014 63 100601]
[3] White N 2000 Nature 407 146
[4] Xu H, Li X Y, Xiao X, Li Z Y, Yu Y D, Yu J Z 2013 Chin. Phys. B 22 114212
[5] Shi G, Zhang F M, Qu X H, Meng X S 2014 Acta Phys. Sin. 63 184209 (in Chinese) [时光, 张福民, 曲兴华, 孟祥松 2014 63 184209]
[6] Song S B, Xu L P, Zhang H, Gao N, Shen Y H 2015 Chin. Phys. B 24 057201
[7] Meng Y S, Zhong X W, Yang S S 2008 Space Electronic Technology 3 51 (in Chinese) [蒙艳松, 钟兴旺, 杨姗姗 2008 空间电子技术 3 51]
[8] Reigber C, Schmidt R, Flechtner F, Konig R, Meyer U, Neumayer K H, Schwintzer P, Zhu S Y 2005 J. Geodyn. 39 1
[9] Wan Q Y, Zhou Z B 2008 Geophysical Geochemical Exploration 32 383 (in Chinese) [万庆元, 周泽兵 2008 物探与化探 32 383]
[10] Gueuning F, Varlan M, Eugene C, Dupuis P 1996 Instrumentation and Measurement Technology Conference Brussels, Belgium, June 4-6, 1996 p399
[11] Amann M C, Bosch T, Lescure M, Myllyla R, Rioux M 2000 Opt. Eng. 40 10
[12] Liu M, Yang X Y, Liu C J 2012 Chinese Journal of Laser 39 0208004 (in Chinese) [刘邈, 杨学友, 刘常杰 2012 中国激光 39 0208004]
[13] Webster D 1991 IEEE Trans. Instrum. Meas. 43 578
[14] Oiwa T, Shioda T, Tanaka Y, Takeda M, Kurokawa T 2007 Conference on Lasers and Electro-Optics/Pacific Rim Seoul South, Korea, August 26, 2007 ThG2-3
[15] Huang K N, Huang Y P 2008 Sensor. Actuat. A: Phys. 149 42
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