OSA's Digital Library

Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 1608–1618

A multi-frequency signal processing method for fiber-optic gyroscopes with square wave modulation

Yongxiao Li, Zinan Wang, Yi Yang, Chao Peng, Zhenrong Zhang, and Zhengbin Li  »View Author Affiliations


Optics Express, Vol. 22, Issue 2, pp. 1608-1618 (2014)
http://dx.doi.org/10.1364/OE.22.001608


View Full Text Article

Enhanced HTML    Acrobat PDF (1052 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The bias stability and random walk coefficients (RWC) of interferometric fiber-optic gyroscopes (IFOGs) are directly affected by characteristic noises produced by optoelectronics interactions in optic sensors. This paper documents a novel demodulation method for square wave modulated IFOGs, a method capable of suppressing the white noise that results from optical intensity noises and circuit noises as well as shot noises. In addition, this paper provides a statistical analysis of IFOG signals. Through use of orthogonal harmonic demodulation followed by deployment of matched filters to detract the Sagnac phase from the IFOGs, these channels we then processed, using principle component analysis (PCA), to establish optimal independent synchronous quadrature signal channels. Finally a difference procedure was carried out for the outputs. Our results showed that an experimental sample of the proposed IFOG (1982 m coil under uncontrolled room temperature) achieved a real-time output variance improvement in detecting the Earth’s rotation rate, which is well matched with theoretical calculations of its Cramèr-Rao bound (CRB).

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2800) Fiber optics and optical communications : Gyroscopes

ToC Category:
Sensors

History
Original Manuscript: September 19, 2013
Revised Manuscript: January 4, 2014
Manuscript Accepted: January 6, 2014
Published: January 16, 2014

Citation
Yongxiao Li, Zinan Wang, Yi Yang, Chao Peng, Zhenrong Zhang, and Zhengbin Li, "A multi-frequency signal processing method for fiber-optic gyroscopes with square wave modulation," Opt. Express 22, 1608-1618 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-2-1608


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. E. J. Post, “Sagnac effect,” Rev. Mod. Phys.39, 475–493 (1967). [CrossRef]
  2. V. Vali and R. W. Shorthill, “Fiber ring interferometer,” Appl. Opt.15, 1099–1100 (1976). [CrossRef] [PubMed]
  3. H. C. Lefèvre, P. Martin, J. Morisse, P. Simonpiètri, P. Vivenot, and H. J. Arditty, “High dynamic range fiber gyro with all-digital processing,” Proc. SPIE1367, 72–80 (1990). [CrossRef]
  4. G. A. Pavlath, “Closed-loop fiber optic gyros,” Proc. SPIE2837, 46–60 (1996). [CrossRef]
  5. R. C. Rabelo, R. T. de Carvalho, and J. Blake, “SNR enhancement of intensity noise-limited FOGs,” J. Lightwave Technol.18, 2146–2150 (2000). [CrossRef]
  6. J. Blake and B. Szafraniec, “Rodom noise in PM and depolarized fiber gyros,” in Conference on Optical Fiber Sensors, Technicol Digest (CD) (Optical Society of America, 1997), paper OWB2.
  7. R. B. Morrow and D. W. Heckman, “High precision IFOG insertion nto the strategic submarine navigation system,” in Proceedings of IEEE Positions Location and Navigation Symposium (Institute of Electrical and Electronics Engineers, New York, 1998), pp. 332–338.
  8. D. W. Heckman and M. Baretela, “Interferometric fiber optic gyro technology (IFOG),” IEEE Aerosp. Electron. Syst. Mag.15, 23–28 (2000). [CrossRef]
  9. Z. Wang, Y. Yang, Y. Li, X. Yu, Z. Zhang, and Z. Li, “Quadrature demodulation with synchronous difference for interferometric fiber-optic gyroscopes,” Opt. Express20, 25421–25431 (2012). [CrossRef] [PubMed]
  10. S. J. Sanders, L. K. Strandjord, and D. Mead, “Fiber optic gyro technology trends-a Honeywell perspective,” in Proceedings of Optical Fiber Sensors Conference Technical Digest (Academic, 2002), pp. 5–8.
  11. I. T. Jolliffe, Principal Component Analysis (Springer, 2002), pp. 150–166.
  12. S. V. Vaseghi, Advanced Digital Signal Processing and Noise Reduction (Wiley, 2008), pp. 107–134.
  13. Y. Gronau and M. Tur, “Digital signal processing for an open-loop fiber-optic gyroscope,” Appl. Opt.34, 5849–5853 (1995). [CrossRef] [PubMed]
  14. R. P. Moller and W. K. Burns, “1.06-ptm all-fiber gyroscope with noise subtraction,” Opt. Lett.16, 1902–1904 (1991). [CrossRef]
  15. J. Blake and I. S. Kim, “Distribution of relative intensity noise in the signal and quadrature channels of a fiber-optic gyroscope,” Opt. Lett.19, 1648–1650 (1994). [CrossRef] [PubMed]
  16. F. L. Walls and D. W. Allan, “Measurements of frequency stability,” Proc. IEEE74, 162–168 (1986). [CrossRef]
  17. H. C. Lefevre, “Sagnac effect centenary: a special occasion to share the “serendipity” of the fibre-optic gyroscope,” in Proceedings of European Workshop on Fibre Sensors, (Academic, 2013), p. 25.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited