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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 15, Iss. 2 — Feb. 1, 1998
  • pp: 443–448

Adaptive suboptimum detection of an optical pulse-position-modulation signal with a detection matrix and centroid tracking

S. Arnon and N. S. Kopeika  »View Author Affiliations

JOSA A, Vol. 15, Issue 2, pp. 443-448 (1998)

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In some applications of optical communication systems, such as satellite optical communication and atmospheric optical communication, the optical beam wanders on the detector surface as a result of vibration and turbulence effects, respectively. The wandering of the beam degrades the communication system performance. In this research, we derive a mathematical model of an optical communication system with a detection matrix to improve the system performance for direct-detection pulse-position modulation. We include a centroid tracker in the communication system model. The centroid tracker tracks the center of the beam. Using the position of the beam center and an a priori model of the beam spreading, we estimate the optical power on each pixel (element) in the detection matrix. Using knowledge of the amplitudes of signal and noise in each pixel, we tune adaptively and separately the gain of each individual pixel in the detection matrix for communication signals. Tuning the gain is based on the mathematical model derived in this research. This model is defined as suboptimal, owing to some approximations in the development and is a suboptimum solution to the optimization problem of n multiplied by m free variables, where n, m are the dimensions of the detection matrix. Comparison is made between the adaptive suboptimum model and the standard model. From the mathematical analysis and the results of the comparison it is clear that this model significantly improves communication system performance.

© 1998 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(060.4510) Fiber optics and optical communications : Optical communications

S. Arnon and N. S. Kopeika, "Adaptive suboptimum detection of an optical pulse-position-modulation signal with a detection matrix and centroid tracking," J. Opt. Soc. Am. A 15, 443-448 (1998)

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  1. D. Sadot and N. S. Kopeika, “Forecasting optical turbulence strength on the basis of macroscale meteorology and aerosols: models and validation,” Opt. Eng. (Bellingham) 31, 200–212 (1991).
  2. R. L. Fante, “Electric beam propagation in turbulent media,” Proc. IEEE 63, 1669–1688 (1975).
  3. E. C. Crittenden, A. W. Cooper, E. A. Milne, G. W. Rodeback, S. H. Kalmbach, and R. L. Armstead, “Effects of turbulence on imaging through the atmosphere,” in Optical Properties of the Atmosphere, R. C. Sepucha, ed. Proc. SPIE 142, 130–134 (1978).
  4. J. H. Churnside, “Angle of arrival fluctuation of a reflected beam in atmospheric turbulence,” J. Opt. Soc. Am. A 4, 1264–1272 (1987).
  5. M. Witting, L. van Holtz, D. E. L. Tunbridge, and H. C. Vermeulen, “In orbit measurements of microaccelerations of ESA’s communication satellite OLYMPUS,” in Free Space Laser Communication Technologies II, O. L. Begley and B. D. Seery, eds.Proc. SPIE 1218, 205–214 (1990).
  6. S. Dyne, P. Collins, and D. Tunbridge, “Satellite mechanical health monitoring,” Proceedings of the IEE Colloquium on Advance Vibration Measurements, Techniques and Instruments for the Early Prediction of Failure (Institute of Electrical Engineers, London, 1993), p. 4/1–8.
  7. C. C. Chen and C. S. Gardner, “Impact of random pointing and tracking errors on the design of coherent and incoherent optical intersatellite communication links,” IEEE Trans. Commun. 37, 252–260 (1989).
  8. A. Yariv, Optical Electronics, 3rd ed. (Holt, Rinehart & Winston, New York, 1985), pp. 306–400.
  9. H. Kressel, ed., Semiconductor Devices for Optical Communication, Vol. 38 of Topics in Applied Physics (Springer-Verlag, Berlin, 1982), pp. 159–263.
  10. G. S. Mecherle and K. L. Marrs, “Description and results of satellite laser communication/tracking simulation,” in Proceedings of the 1994 IEEE Aerospace Applications Conference (IEEE, Piscataway, N.J., 1994), pp. 87–101.
  11. S. I. Green and M. P. Bobek, “Bit error rate testing of quadrant photodetectors,” in Space Sensing, Communications, and Networking, M. Ross and R. J. Temkin, eds.Proc. SPIE 1059, 137–145 (1989).
  12. S. G. Lambert and W. L. Casey, Laser Communication in Space, (Artech House, Norwood, Mass. 1995), pp. 179–195.
  13. C. C. Chen, H. Ansari, and J. R. Lesh, “Precision beam pointing for laser communication system using a CCD based tracker,” in Space Guidance, Control, and Tracking, G. E. Sevaston and F. Wade, eds.Proc. SPIE 1949, 15–24 (1993).
  14. Y. Bar-Shalom, H. M. Shertukde, and K. R. Pattipati, “Precision target tracking for small extended objects,” Opt. Eng. (Bellingham) 29, 121–126 (1990).
  15. D. R. Van Rheeden and R. A. Jones, “Noise effects on centroid tracker aim point estimation,” IEEE Trans. Aerosp. Electron. Syst. 24, 177–185 (1988).
  16. Y. Bar-Shalom, H. M. Shertukde, and K. R. Pattipati, “Use of measurement from an imaging sensor for precision target tracking,” IEEE Trans. Aerosp. Electron. Syst. 25, 863–872 (1989).
  17. S. Arnon, S. Rotman, and N. S. Kopeika, “Optimum transmitter optics aperture for free space satellite optical communication as a function of tracking system performance,” IEEE Trans. Aerosp. Electron. Syst. (to be published).
  18. S. Arnon, S. Rotman, and N. S. Kopeika, “Beamwidth and transmitter power adaptive to tracking system performance for free-space optical communication,” Appl. Opt. 36, 6095–6101 (1997).
  19. S. Arnon and N. S. Kopeika, “The performance limitations of free space optical communication satellite networks due to vibrations—analog case,” Opt. Eng. (Bellingham) 36, 175–182 (1997).
  20. S. Arnon, S. Rotman, and N. S. Kopeika, “The performance limitations of free space optical communication satellite networks due to vibrations—digital case,” Opt. Eng. (Bellingham) (to be published).
  21. R. M. Gagliardi and S. Karp, Optical Communication, 2nd ed., (Wiley, New York, 1995), pp. 201–206, 305–340.

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