Correction on effect of Earth’s oblateness in inversion of GPS occultation data |
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| Authors: | Xu Xiaohua Ph D Li Zhenghang Luo Jia |
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| Institution: | (1) School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, 430079 Wuhan, China |
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| Abstract: | By using observed CHAMP orbit ephemeredes and MSISE-90 dry air model and regarding the earth as a sphere and an ellipsoid
respectively, phase delays are simulated and the simulated data are retrieved under different schemes. The comparison between
the inverted temperature profiles and the model temperature profiles shows that by inverting observed data, we will get temperature
results with large errors if the effect of Earth’s oblateness is omitted. The correction method is proved to be effective
because the temperature errors decreased obviously with this method.
Funded by the Opening Foundation of the Key Laboratory of Geospace Environment and Geodesy of the Ministry of Education (03-04-09). |
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| Keywords: | occultation inversion Earth’ s oblateness |
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