| 我国中低纬地区GPS定位中的电离层二阶项延迟影响分析与研究 |
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| 引用本文： | 刘西凤,袁运斌.我国中低纬地区GPS定位中的电离层二阶项延迟影响分析与研究[J].中国科学:物理学 力学 天文学,2010(5):658-662. |
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| 作者姓名： | 刘西凤 袁运斌 |
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| 作者单位： | 中国科学院测量与地球物理研究所动力大地测量学重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家杰出青年科学基金(批准号:40625013);;国家自然科学基金(批准号:40890160);;国家高技术研究发展计划(编号:2007AA12Z311)资助项目 |
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| 摘 要： | 基于消除电离层一阶项延迟的双频载波相位Lc线性组合观测量,利用中国地壳运动观测网络以及国际IGS（International GNSS Service）提供的6个跟踪站连续15天的观测数据,初步分析和研究了电离层二阶项延迟对我国中低纬地区全球定位系统（Global Positioning System,GPS）定位结果的影响.研究结果表明,在电离层二阶项延迟影响下,我国中低纬地区GPS定位结果呈普遍规律性南移的现象,且各地区南偏趋势差异甚微.
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| 关 键 词： | GPS 电离层二阶项延迟 总电子含量（TEC） |
Preliminary analysis on the effect of second-order ionospheric delay on GPS positioning solution over the mid-low latitude regions in China |
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| LIU XiFeng, & YUAN YunBin Key Laboratory of Dynamic Geodesy.Preliminary analysis on the effect of second-order ionospheric delay on GPS positioning solution over the mid-low latitude regions in China[J].Scientia Sinica Pysica,Mechanica & Astronomica,2010(5):658-662. |
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| Authors: | LIU XiFeng & YUAN YunBin Key Laboratory of Dynamic Geodesy |
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| Institution: | LIU XiFeng1,2* & YUAN YunBin1* 1 Key Laboratory of Dynamic Geodesy,Institute of Geodesy , Geophysics,Chinese Academy of Sciences,Wuhan 430077,China,2 Graduate University of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | Based on the ionosphere-free carrier phase combination, dual-frequency GPS data from 6 tracking stations during April 9—23, 2003 provided by IGS organization and the Crustal Movement Observation Network of China is processed to study the impact of second-order ionospheric delay on GPS positioning over the mid-low latitude regions in China. Results indicate that the second-order ionospheric delay would result in the regular southward shift of GPS positioning solution, and the difference is little among the various regions. |
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| Keywords: | GPS second-order ionospheric delay （I2） total electron content （TEC） |
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