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GPS positioning errors during the space weather event of October 2003
Author(s)
Language
English
Status
Submitted
Issued date
2006
Abstract
Due to the configuration of the Earth’s magnetic field and its reconnection with the Interplanetary Magnetic Field (IMF), the high latitudes ionosphere is directly connected with outer space and, consequently, highly sensitive to the enhancement of the electromagnetic radiation and energetic particles coming from the Sun. Under such conditions the ionosphere may show the presence of small-scale structures or irregularities imbedded in the large-scale ambient plasma. These irregularities can produce short term phase and amplitude fluctuations in the carrier frequency of the radio waves which pass through them, commonly called ionospheric phase and amplitude scintillations. Since September 2003 a GPS Ionospheric Scintillation and TEC Monitor (GISTM) receiver has been deployed at the Italian Arctic station “Dirigibile Italia” in Ny Alesund (79.9° N, 11.9° E, Svalbard, Norway), in the frame of the ISACCO (Ionospheric Scintillations Arctic Campaign Coordinated Observation) project. The receiver computes and records GPS phase and amplitude scintillation parameters, as well as TEC (Total Electron Content). The measurements made by ISACCO during the superstorm of October 2003 have been here used to assess the positioning errors affecting GNSS (Global Navigation Satellite Systems, such as GPS and the European Galileo) users and their correlation with the occurrence of observed levels of scintillation.
References
Aquino M, A. Dodson, G. De Franceschi, L. Alfonsi, V. Romano and C. N. Mitchell, Scintillation Monitoring Results during the 30 October 2003 Space Weather Event, Online Proceedings, ESA/ESTEC Space Weather Week, Noordwijk, Netherlands, November 2005.
Aquino M., A. Dodson A., H. J. Souter, T. Moore, Ionospheric Scintillation Effects on GPS Carrier Phase Positioning Accuracy at Auroral and Sub-auroral Latitudes, IAG Symposium, Vol. 130, 2006, in press.
De Franceschi G., L. Alfonsi, V. Romano, ISACCO: an Italian project to monitor the high latitudes
ionosphere by means of GPS receivers, GPS Solutions, DOI 10.1007/s10291-006-0036-6, 2006.
De Franceschi G., V. Romano, L. Alfonsi, A. Dodson, M. Aquino, C.N. Mitchell, A.W. Wernik, Dynamics of the high latitude patches and associated small scale irregularities, submitted to J. Atmos. Sol-Terr. Phys., 2006.
Doherty, P. H., S. H. Delay, C. E. Valladares and J. Klobuchar, Ionospheric Scintillation Effects in the Equatorial and Auroral Regions. In: Proceedings of ION GPS 2000, Salt Lake City, USA, 2000.
Gopalswamy, N., L. Barbieri, G. Lu, S. P. Plunkett, and R. M. Skoug, Introduction to the special section: Violent Sun-Earth connection events of October–November 2003, Geophys. Res. Lett., 32, L03S01, doi:10.1029/2005GL022348, 2005.
Van Dierendonck, A.J., J. Klobuchar, and Q. Hua, Ionospheric scintillation monitoring using commercial single frequency C/A code receivers, in ION GPS-93 Proceedings: Sixth International Technical Meeting of the Satellite Division of the Institute of Navigation, pp. 1333–1342, Inst. of Navig., Salt Lake City, Utah, 1993.
Aquino M., A. Dodson A., H. J. Souter, T. Moore, Ionospheric Scintillation Effects on GPS Carrier Phase Positioning Accuracy at Auroral and Sub-auroral Latitudes, IAG Symposium, Vol. 130, 2006, in press.
De Franceschi G., L. Alfonsi, V. Romano, ISACCO: an Italian project to monitor the high latitudes
ionosphere by means of GPS receivers, GPS Solutions, DOI 10.1007/s10291-006-0036-6, 2006.
De Franceschi G., V. Romano, L. Alfonsi, A. Dodson, M. Aquino, C.N. Mitchell, A.W. Wernik, Dynamics of the high latitude patches and associated small scale irregularities, submitted to J. Atmos. Sol-Terr. Phys., 2006.
Doherty, P. H., S. H. Delay, C. E. Valladares and J. Klobuchar, Ionospheric Scintillation Effects in the Equatorial and Auroral Regions. In: Proceedings of ION GPS 2000, Salt Lake City, USA, 2000.
Gopalswamy, N., L. Barbieri, G. Lu, S. P. Plunkett, and R. M. Skoug, Introduction to the special section: Violent Sun-Earth connection events of October–November 2003, Geophys. Res. Lett., 32, L03S01, doi:10.1029/2005GL022348, 2005.
Van Dierendonck, A.J., J. Klobuchar, and Q. Hua, Ionospheric scintillation monitoring using commercial single frequency C/A code receivers, in ION GPS-93 Proceedings: Sixth International Technical Meeting of the Satellite Division of the Institute of Navigation, pp. 1333–1342, Inst. of Navig., Salt Lake City, Utah, 1993.
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