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International Journal of Geophysics
Volume 2012 (2012), Article ID 103963, 16 pages
http://dx.doi.org/10.1155/2012/103963
Research Article

Latitudinal and Local Time Variation of Ionospheric Turbulence Parameters during the Conjugate Point Equatorial Experiment in Brazil

Boston College, Chestnut Hill, MA 02467, USA

Received 2 November 2011; Accepted 5 March 2012

Academic Editor: Y. Sahai

Copyright © 2012 Charles S. Carrano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. A. Basu, E. MacKenzie, and S. Basu, “Ionospheric constraints on VHF/UHF communications links during solar maximum and minimum periods,” Radio Science, vol. 23, no. 3, pp. 363–378, 1988. View at Google Scholar · View at Scopus
  2. K. Groves, S. Basu, E. Weber et al., “Equatorial scintillation and systems support,” Radio Science, vol. 32, no. 5, pp. 2047–2064, 1997. View at Google Scholar · View at Scopus
  3. K. M. Groves, S. Basu, J. M. Quinn et al., “A comparison of GPS performance in a scintillating environment at Ascension Island,” in Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS '00), pp. 672–679, Salt Palace Convention Center, Salt Lake City, Utah, USA, September 2000.
  4. S. Datta-Barua, P. H. Doherty, S. H. Delay, T. Dehel, and J. A. Klobuchar, “Ionospheric scintillation effects on single and dual frequency GPS positioning,” in Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS '03), pp. 336–346, Portland, OR, USA, September 2003.
  5. C. S. Carrano and K. M. Groves, “Temporal decorrelation of GPS satellite signals due to multiple scattering from ionospheric irregularities,” in Proceedings of the 23rd International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS '10), pp. 361–374, Oregon Convention Center, Portland, OR, USA, September 2010. View at Scopus
  6. Z.-W. Xu, J. Wu, and Z.-S. Wu, “A survey of ionospheric effects on space-based radar,” Waves in Random Media, vol. 14, no. 2, pp. S189–S273, 2004. View at Publisher · View at Google Scholar · View at Scopus
  7. N. Rogers and P. Cannon, “The synthetic aperture radar trans-ionospheric radio propagation simulator (SAR-TIRPS),” in Proceedings of the 11th International Conference on Ionospheric Radio Systems and Techniques (IRST '09), pp. 112–116, Edinburgh, UK, April 2009. View at Publisher · View at Google Scholar · View at Scopus
  8. C. S. Carrano, K. M. Groves, and R. G. Caton, “Accuracy of phase screen models using deterministic screens derived from GPS and ALTAIR measurements,” in Proceedings of the Ionospheric Effects Symposium, Alexandria, Va, USA, May 2011.
  9. J. Aarons, “Global morphology of ionospheric scintillations,” Proceedings of the IEEE, vol. 70, no. 4, pp. 360–378, 1982. View at Google Scholar · View at Scopus
  10. I. S. Batista, M. A. Abdu, A. J. Carrasco et al., “Equatorial spread F and sporadic E-layer connections during the Brazilian conjugate point equatorial experiment (COPEX),” Journal of Atmospheric and Solar-Terrestrial Physics, vol. 70, no. 8-9, pp. 1133–1143, 2008. View at Publisher · View at Google Scholar · View at Scopus
  11. M. T. A. H. Muella, E. R. de Paula, I. J. Kantor et al., “GPS L-band scintillations and ionospheric irregularity zonal drifts inferred at equatorial and low-latitude regions,” Journal of Atmospheric and Solar-Terrestrial Physics, vol. 70, no. 10, pp. 1261–1272, 2008. View at Google Scholar
  12. M. A. Abdu, I. S. Batista, B. W. Reinisch et al., “Conjugate point equatorial experiment (COPEX) campaign in Brazil: electrodynamics highlights on spread F development conditions and day-to-day variability,” Journal of Geophysical Research A, vol. 114, no. 4, Article ID A04308, 21 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  13. J. H. A. Sobral, M. A. Abdu, T. R. Pedersen et al., “Ionospheric zonal velocities at conjugate points over Brazil during the COPEX campaign: experimental observations and theoretical validations,” Journal of Geophysical Research A, vol. 114, no. 4, Article ID A04309, 24 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  14. E. R. de Paula, M. T. A. H. Muella, J. H. A. Sobral et al., “Magnetic conjugate point observations of kilometer and hundred-meter scale irregularities and zonal drifts,” Journal of Geophysical Research A, vol. 115, no. 8, Article ID A08307, 15 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  15. A. Ishimaru, Wave Propagation and Scattering in Random Media, IEEE Press and Oxford University, New York, NY, USA, 1997.
  16. C. L. Rino, “Power law phase screen model for ionospheric scintillation, 1 weak scatter,” Radio Science, vol. 14, no. 6, pp. 1135–1145, 1979. View at Google Scholar · View at Scopus
  17. C. L. Rino and C. S. Carrano, “The application of numerical simulations in Beacon scintillation analysis and modeling,” Radio Science, vol. 46, no. 3, Article ID RS0D02, 10 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  18. C. L. Rino, The Theory of Scintillation With Applications in Remote Sensing, John Wiley, New York, NY, USA, 2011.
  19. B. M. Ledvina, P. M. Kintner, and E. R. de Paula, “Understanding spaced-receiver zonal velocity estimation,” Journal of Geophysical Research A, vol. 109, no. 10, Article ID A10306, 12 pages, 2004. View at Publisher · View at Google Scholar · View at Scopus
  20. P. D. Welch, “The use of fast Fourier transform for the estimation of power spectra: a method based on time averaging over short, modified periodograms,” IEEE Transactions on Audio and Electroacoustics, vol. 15, no. 2, pp. 70–73, 1967. View at Google Scholar
  21. N. Olsen, T. Sabaka, and L. Tøffner-Clausen, “Determination of the IGRF 2000 model,” Earth, Planets and Space, vol. 52, no. 12, pp. 1175–1182, 2000. View at Google Scholar · View at Scopus
  22. J. A. Secan, R. M. Bussey, E. J. Fremouw, and S. Basu, “Improved model of equatorial scintillation,” Radio Science, vol. 30, no. 3, pp. 607–617, 1995. View at Google Scholar · View at Scopus
  23. M. A. Cervera and R. M. Thomas, “Latitudinal and temporal variation of equatorial ionospheric irregularities determined from GPS scintillation observations,” Annales Geophysicae, vol. 24, no. 12, pp. 3329–3341, 2006. View at Google Scholar · View at Scopus
  24. C. S. Carrano, K. M. Groves, R. G. Caton, C. L. Rino, and P. R. Straus, “Multiple phase screen modeling of ionospheric scintillation along radio occultation raypaths,” Radio Science, vol. 46, no. 3, Article ID RS0D07, 14 pages, 2011. View at Publisher · View at Google Scholar · View at Scopus
  25. N. C. Rogers, P. S. Cannon, and K. M. Groves, “Measurements and simulation of ionospheric scattering on VHF and UHF radar signals: channel scattering function,” Radio science, vol. 44, Article ID RS0A07, 10 pages, 2009. View at Publisher · View at Google Scholar
  26. F. R. Hoots and R. L. Roehrich, Spacetrack Report #3, Models for Propagation of the NORAD Element Sets, United States Air Force, Colorado Springs, Colo, USA, 1980.
  27. H. Booker, J. A. Ferguson, and H. O. Vats, “Comparison between the extended-medium and the phase-screen scintillation theories,” Journal of Atmospheric and Terrestrial Physics, vol. 47, no. 4, pp. 381–399, 1985. View at Google Scholar · View at Scopus
  28. H. Booker and G. MajidiAhi, “Theory of refractive scattering in scintillation phenomena,” Journal of Atmospheric and Terrestrial Physics, vol. 43, no. 11, pp. 1199–1214, 1981. View at Google Scholar · View at Scopus
  29. E. J. Fremouw and J. A. Secan, “Modeling and scientific application of scintillation results,” Radio Science, vol. 19, no. 3, pp. 687–694, 1984. View at Google Scholar · View at Scopus
  30. K. C. Yeh and C. H. Liu, “Radio wave scintillations in the ionosphere,” Proceedings of the IEEE, vol. 70, no. 4, pp. 324–360, 1982. View at Google Scholar · View at Scopus
  31. A. Bhattacharyya, K. C. Yeh, and S. J. Franke, “Deducing turbulence parameters from transionospheric scintillation measurements,” Space Science Reviews, vol. 61, no. 3-4, pp. 335–386, 1992. View at Publisher · View at Google Scholar · View at Scopus
  32. C. S. Carrano and C. L. Rino, “Split-step solution of the 4th moment equation for propagation through intense ionospheric disturbances,” in Proceedings of the International Conference on Electromagnetics in Advanced Applications (ICEAA '11), Turin, Italy, 2011.
  33. R. Piessens, E. deDoncker-Kapenga, C. Uberhuber, and D. Kahaner, Quadpack: A Subroutine Package for Automatic Integration, vol. 1 of Computational Mathematics, Springer, 1983.
  34. J. A. Nelder and R. Mead, “A simplex method for function minimization,” The Computer Journal, vol. 7, no. 4, pp. 308–313, 1965. View at Google Scholar
  35. R. G. Caton, C. S. Carrano, C. M. Alcala, K. M. Groves, T. Beach, and D. Sponseller, “Simulating the effects of scintillation on transionospheric signals with a two-way phase screen constructed from ALTAIR phase-derived TEC,” Radio Science, vol. 44, no. 4, Article ID RS0A12, 9 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  36. C. L. Rino and J. Owen, “The time structure of transionospheric radio wave scintillation,” Radio Science, vol. 15, no. 3, pp. 479–489, 1980. View at Google Scholar
  37. C. S. Carrano, A. Anghel, R. A. Quinn, and K. M. Groves, “Kaiman filter estimation of plasmaspheric total electron content using GPS,” Radio Science, vol. 44, no. 4, Article ID RS0Al0, 14 pages, 2009. View at Publisher · View at Google Scholar · View at Scopus
  38. C. S. Carrano and K. Groves, “The GPS segment of the AFRL-SCINDA global network and the challenges of real-time TEC estimation in the equatorial ionosphere,” in Institute of Navigation, National Technical Meeting (NTM '06), pp. 1036–1047, January 2006. View at Scopus
  39. M. Knight and A. Finn, “The effects of ionospheric scintillation on GPS,” in Proceedings of the Institute of Navigation (ION) GPS meeting, Nashville, Tenn, USA, 1998. View at Scopus
  40. R. S. Conker, M. B. El-Arini, C. J. Hegarty, and T. Hsiao, “Modeling the effects of ionospheric scintillation on GPS/Satellite-based augmentation system availability,” Radio Science, vol. 38, no. 1, article 1001, 23 pages, 2003. View at Publisher · View at Google Scholar · View at Scopus
  41. S. J. Franke and C. H. Liu, “Modeling of equatorial multifrequency scintillation,” Radio Science, vol. 20, no. 3, pp. 403–415, 1985. View at Google Scholar · View at Scopus
  42. M. T. A. H. Muella, E. A. Kherani, E. R. de Paula et al., “Scintillation-producing Fresnel-scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly,” Journal of Geophysical Research A, vol. 115, no. 3, Article ID A03301, 19 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  43. C. E. Valladares and P. H. Doherty, “The low-latitude ionosphere sensor network (LISN),” in Proceedings of the International Technical Meeting of The Institute of Navigation, pp. 16–24, Anaheim, Calif, USA, January 2009. View at Scopus
  44. C. Valladares, “The low-latitude ionosphere sensor network (LISN): initial results,” in Proceedings of the 2011 Ionospheric Effects Symposium, Alexandria, Va, USA, May 2011.