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Potentialities of multifrequency ionospheric correction in Global Navigation Satellite Systems

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Abstract

The first-order ionospheric error is reduced in the dual-frequency Global Navigation Satellite Systems (GNSS). In this paper, the possibility of eliminating ionospheric higher-order errors in the multifrequency GNSS is explored. Since the second-order error associated with the geomagnetic field effect on the refractive index can be eliminated in dual-frequency measurements, we explore the possibility of eliminating third-order errors in triple-frequency GNSS in view of phase scintillations. A connection between the possibility of improving the multifrequency GNSS accuracy and diffraction effects in radio signal propagation through the randomly inhomogeneous ionosphere is shown. The numerical simulation has revealed that the systematic, residual ionospheric error is considerably reduced when we pass on from dual-frequency to triple-frequency measurements. The change in the residual error variance during such a transition depends however on the relationship between the inner scale of the turbulent spectrum of ionospheric irregularities and the Fresnel radius. Given the inner scale larger than the Fresnel radius, not only the systematic error, but also the standard deviation reduces when we pass on from dual-frequency to triple-frequency measurements. Otherwise, when the Fresnel radius exceeds the inner scale, the variance increases with increasing number of frequencies in use.

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Abbreviations

GNSS:

Global Navigation Satellite Systems

GO:

Geometrical optics

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Authors and Affiliations

  1. Pusan National University, 50 Cheonghak-ri, Samrangjin-eup, Miryang, Gyeoungnam, 627-706, Korea

    B. C. Kim

  2. Irkutsk State University, 20 Gagarin Blvd, Irkutsk, 664003, Russia

    M. V. Tinin

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  1. B. C. Kim
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  2. M. V. Tinin
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Correspondence to M. V. Tinin.

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Kim, B.C., Tinin, M.V. Potentialities of multifrequency ionospheric correction in Global Navigation Satellite Systems. J Geod 85, 159–169 (2011). https://doi.org/10.1007/s00190-010-0425-z

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