| 地基GPS VTEC约束的电离层掩星反演方法 |
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| 引用本文： | 周义炎,申文斌,吴云,张训械.地基GPS VTEC约束的电离层掩星反演方法[J].地球物理学报,2012,55(4):1088-1094. |
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| 作者姓名： | 周义炎 申文斌 吴云 张训械 |
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| 作者单位： | 1. 武汉大学测绘学院, 武汉 430079;
2. 中国科学院空间天气学国家重点实验室, 北京 100190;
3. 中国地震局地震研究所, 武汉 430071;
4. 中国科学院武汉物理与数学研究所, 武汉 430071 |
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| 基金项目： | 地震行业专项，国家自然科学基金，空间天气学国家重点实验室专项基金，中国地震局地震研究所所长基金 |
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| 摘 要： | 本文在分析GPS电离层掩星Abel积分变换反演的基础上,介绍了一种顾及电离层水平梯度信息的反演新方法,即地基GPS VTEC约束的电离层掩星反演法,并将该方法应用于COSMIC低纬掩星观测资料的反演.初步的统计结果表明,与经典Abel变换反演相比,地基GPS VTEC约束反演的临界频率foF2更接近于电离层测高仪观测的结果.
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| 关 键 词： | GPS电离层掩星 Abel变换反演 VTEC约束反演 COSMIC |
| 收稿时间： | 2011-04-11 |
Ground-based GPS VTEC constrained inversion method for ionospheric occultation |
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| ZHOU Yi-Yan
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SHEN Wen-Bin
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WU Yun
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ZHANG Xun-Jie.Ground-based GPS VTEC constrained inversion method for ionospheric occultation[J].Chinese Journal of Geophysics,2012,55(4):1088-1094. |
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| Authors: | ZHOU Yi-Yan SHEN Wen-Bin WU Yun ZHANG Xun-Jie |
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| Institution: | 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2. State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China;
3. Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;
4. Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | This paper firstly analyzes the Abel transform inversion of GPS ionospheric occultation,and then introduces a new inversion method,which takes the horizontal gradient information of the ionosphere into account,called the ground-based GPS VTEC constrained inversion method for ionospheric occultation.Subsequently,this new method is applied in the inversion of COSMIC low-latitude occultation observations.The preliminary statistical results show that the retrieved critical frequency foF2 values using the ground-based GPS VTEC constrained inversion are closer to the ionosonde measurements than those using the classical Abel transform inversion. |
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| Keywords: | GPS ionospheric occultation Abel transform inversion VTEC constrained inversion COSMIC |
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