Real-Time Positioning Accuracy Analysis of Single-Frequency GPS Based on Ionosphere Grid Products

Jian Zhou; Xing Cun Wu

doi:10.4028/www.scientific.net/AMM.644-650.4591

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 644-650Real-Time Positioning Accuracy Analysis of...

Real-Time Positioning Accuracy Analysis of Single-Frequency GPS Based on Ionosphere Grid Products

Abstract:

Firstly, this paper introduces the common methods and accounts for the advantage of ionosphere grid products for correcting ionosphere errors with single-frequency GPS, according the analysis that ionosphere grid product can effectively ameliorate errors of single-frequency GPS navigation and positioning. In detail, this article gives the establishment, forecast and operation methods of ionosphere grid products, and introduces the method that calculates the VTEC (Vertical Total Electronic Contents) values of the geocentric latitude of the ionospheric pierce point, the VTEC values of four-point interpolation models and the single-layer mapping function. It’s also compares different pairs of ionosphere correction data and satellite ephemeris which use to analyze the impact of real-time positioning accuracy of single-frequency GPS. The experiments prove that the predicted ionosphere grid products can obviously improve the precision for single-frequency users, and have some practical values for single-frequency positioning and orbit determination.

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Periodical:

Applied Mechanics and Materials (Volumes 644-650)

Pages:

4591-4594

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.644-650.4591

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Online since:

September 2014

Authors:

Jian Zhou*, Xing Cun Wu

Keywords:

Ionosphere Grid Product, Positioning Precision, Single-Frequency GPS

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References

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