Suppression of relative intensity noise for FOG by using signal cross-correlation

HAO Yan-ling; WANG De-shuang; CHEN Hong-gang; ZHANG Yong-gang

doi:10.3788/OPE.20122006.1218

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Suppression of relative intensity noise for FOG by using signal cross-correlation

更新时间：2020-08-12

- Suppression of relative intensity noise for FOG by using signal cross-correlation
- Optics and Precision Engineering Vol. 20, Issue 6, Pages: 1218-1224(2012)
- 作者机构：
  
  哈尔滨工程大学自动化学院,黑龙江哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122006.1218
  CLC： TN253;U666.1
- Received：08 October 2011，
  
  Revised：28 February 2012，
  
  Published Online：10 June 2012，
  
  Published：10 June 2012
- 稿件说明：
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郝燕玲, 王德双, 陈洪刚, 张勇刚. 利用信号相关性抑制光纤陀螺强度噪声[J]. 光学精密工程, 2012,20(6): 1218-1224

HAO Yan-ling, WANG De-shuang, CHEN Hong-gang, ZHANG Yong-gang. Suppression of relative intensity noise for FOG by using signal cross-correlation[J]. Editorial Office of Optics and Precision Engineering, 2012,20(6): 1218-1224
郝燕玲, 王德双, 陈洪刚, 张勇刚. 利用信号相关性抑制光纤陀螺强度噪声[J]. 光学精密工程, 2012,20(6): 1218-1224 DOI： 10.3788/OPE.20122006.1218.

HAO Yan-ling, WANG De-shuang, CHEN Hong-gang, ZHANG Yong-gang. Suppression of relative intensity noise for FOG by using signal cross-correlation[J]. Editorial Office of Optics and Precision Engineering, 2012,20(6): 1218-1224 DOI： 10.3788/OPE.20122006.1218.

摘要

提出了一种利用陀螺干涉信号和耦合器空闲端信号相关性估计光源强度噪声抑制效果的方法

并在现场可编程门阵列(FPGA)中进行了实时估计。根据估计结果

判决是否进行强度噪声相减

以提高光纤陀螺强度噪声抑制方法的可靠性。理论分析表明

强度噪声抑制效果与信号相关性直接相关。利用该方法

对某高精度干涉型光纤陀螺进行了实验。结果表明

当陀螺干涉信号和耦合器空闲端信号互相关系数为0.91时

干涉信号噪声方差降低至17.16%

然而

当上述互相关系数为0.28时

噪声相减法反而使干涉信号噪声方差增大至143.18%

由此验证了理论分析结果。利用该方法可以在线检测陀螺干涉信号和耦合器空闲端信号的相关性

进而避免噪声相减法中当陀螺干涉信号和耦合器空闲端信号相关性较差时

光纤陀螺噪声不降反升的情况

提高了强度噪声相减法的可靠性。

Abstract

A method to estimate the efficiency of relative intensity noise subtraction for a Fiber Optic Gyroscope (FOG) was proposed

and the estimation result could be used to improve the reliability of relative intensity noise subtraction of the FOG. Theoretical analysis shows that the efficiency of relative intensity noise subtraction of the FOG is highly dependent on the cross-correlation between the outputs of FOG and coupler. By proposed method

the experiment on a high precision interferometric FOG was performed

and obtained results show that when the cross-correlation coefficient is 0.91

the variance of the noise after subtraction reduces to 17.16%.However when the cross-correlation coefficient is 0.28

that of the noise after subtraction goes up to 143.18%. These results are coincident with that of theoretical analysis.By utilizing this method

the cross-correlation between the outputs of FOG and coupler improves the reliability of the intensity noise subtraction.

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references

马东营,宋凝芳,金靖,等. 微小型光纤陀螺组合分时复用技术[J]. 光学精密工程,2010,18(10):2171-2177. MA D Y, SONG N F, JIN J, et al..Time-division multiplexing for micro-miniature fiber-optic gyroscopes [J]. Opt. Precision Eng., 2010,18(10):2171-2177. (in Chinese)

金靖,张忠钢,王铮,等. 基于RBF神经网络的数字闭环光纤陀螺温度误差补偿[J]. 光学精密工程2008,16(2):235-240. JIN J, ZHANG ZH G, WANG ZH, et al..Temperature error compensation for digital closed-loop fiber optic gyroscope based on RBF neural network [J]. Opt. Precision Eng., 2010, 18(10):2171-2177. (in Chinese)

DARRYL B, LEE S,NORMAN T, et al.. Method and apparatus for monitoring angle random walk of fiber optic gyroscope:US,0225323 A1. . 2009.

LEE K S,GARY W A,DICK A, et al.. System for suppression of relative intensity noise in a fiber optic gyroscope:US,6204921 B1 . 2001.

徐建营,王学锋,李超,等. 光强外调制法抑制相对强度噪声[J]. 中国惯性技术学报,2008,16(6):740 -743. XU J Y, WANG X F, LI CH, et al.. Method of external optical intensity modulation to reduce relative intensity noise[J]. Journal of China inertial technology, 2008,16(6):740-743. (in Chinese)

RENATO C R, RICARDO T D, JAMES B. SNR Enhancement of intensity noise-limited FOGs[J]. Journal of Lightwave Technology, 2000,18(12):2146-2150.

张桂才. 应用于高精度光纤陀螺的超荧光光纤光源[J]. 红外与激光工程,2006,35(增刊):9 -16. ZHANG G C. Super fluorescent fiber source for precision grade fiber optic gyroscope application [J].Infrared and laser engineering, 2006,35(Supp.):9-16. (in Chinese)

KEVIN K, MARK B, WALTER H. High performance fiber optic gyroscope with noise reduction [J]. SPIE. Fiber Optic and Laser Sensors XII. 1994,2292:255.

孙国飞,吴衍记,那永林. 光纤陀螺中随机游走的分析研究[J]. 战术导弹技术,2009(1):75-78. SUN G F, WU Y J, NA Y L. Investigation into Random Walk in Optical Fiber Gyroscope[J]. Tactiacl Missile Technology, January, 2009(1):75-78. (in Chinese)

杨远洪,王峥,伊小素,等. 基于掺铒超荧光光纤光源的高精度光纤陀螺[J]. 北京航空航天大学学报,2005(11):1159-1162. YANG Y H, WANG ZH, YI X S, et al.. High precision fiber optic gyroscope based on Er-doped superfIuorescent fiber source.[J]. Journal of Beijing University of Aeronautics and Astronautic, 2005(11):1159-1162. (in Chinese)

孙国飞,那永林,吴衍记. 抑制掺铒光纤光源强度噪声的方法研究[J]. 红外与激光工程,2007(S2):589-592. SUN G F, NA Y L, WU Y J. Research on suppression methods of Er-doped superfluorescent fiber Srce intensity noise[J]. Infrared and Laser Engineering, 2007(S2):589-592. (in Chinese)

姚琼,谢元平,宋章启. 光纤陀螺光源误差及消除方法分析[J]. 激光杂志,2005(5):74-75. YAO Q, XIE Y P, SONG ZH Q. Analysis on light source intensity noise and noise subtraction method for fiber optic gyroscope [J]. Laser Journal, 2005(5):74-75. (in Chinese)

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