Model analysis method (MAM) on the effect of the second-order ionospheric delay on GPS positioning solution |
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Authors: | XiFeng Liu YunBin Yuan XingLiang Huo ZiShen Li Wei Li |
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Affiliation: | 1 Key Laboratory of Dynamic Geodesy, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract: | In this paper,we develop an approach to study the effect of second-order ionospheric delay on GPS positioning based on the ionosphere-free combination (abbreviated to Lc) of GPS dual-frequency carrier phase observables,in which the first-order ionospheric delay has been eliminated.GPS data from IGS WUHN tracking station during April 9 23,2003 is used to perform the above approach,and results show that the second-order ionospheric delay in GPS so-called ionosphere-free observables will result in the regular ... |
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Keywords: | Global Positioning System (GPS) second-order ionospheric delay (I2) total electron content (TEC) GPS positioning in-ternational geomagnetic reference field 10 (IGRF10) |
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