Triple-frequency method for high-order ionospheric refractive error modelling in GPS modernization

Wang, Z, Wu, Y, Zhang, K and Meng, Y 2005, 'Triple-frequency method for high-order ionospheric refractive error modelling in GPS modernization', Journal of Global Positioning Systems, vol. 4, pp. 291-295.


Document type: Journal Article
Collection: Journal Articles

Title Triple-frequency method for high-order ionospheric refractive error modelling in GPS modernization
Author(s) Wang, Z
Wu, Y
Zhang, K
Meng, Y
Year 2005
Journal name Journal of Global Positioning Systems
Volume number 4
Start page 291
End page 295
Total pages 4
Publisher International Association of Chinese Professionals in Global Positioning Systems
Abstract New opportunities for the refinement of ionospheric modelling and reduction of the ionospheric error in GPS measurements arise since a third-frequency will be introduced for the modernised GPS system. This paper investigates theoretical models of the ionospheric refractive error. A triple-frequency method of correcting the 1st and 2nd order ionospheric refraction is presented and a triple-frequency ionosphere-free combination method is proposed for GPS modernization. These new methods can be equally applied to the European GALILEO system. In addition, typical effects of the 2nd and 3rd order ionospheric effects are also investigated, and a correct formula for the 3rd order ionospheric error is derived in a simple way for easy implementation.
Subject Geodesy
Copyright notice © CPGPS, 2005
ISSN 1446-3156
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