| 基于IRI背景场的单站电离层TEC地图重构技术 |
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| 引用本文： | 翁利斌,方涵先,杨升高,汪四成.基于IRI背景场的单站电离层TEC地图重构技术[J].空间科学学报,2011,31(4). |
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| 作者姓名： | 翁利斌 方涵先 杨升高 汪四成 |
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| 作者单位： | 解放军理工大学气象学院,南京,211101 |
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| 基金项目： | 国家自然科学基金项目(40505005); 解放军理工大学气象学院预研基金项目共同资助 |
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| 摘 要： | 为了有效解决电离层TEC观测数据稀疏时重构问题，引入IRI-2007作为背景场，利用反距离加权法和克里格方法重构了电离层TEC地图，使用交叉检验方法检验了引入背景场前后的重构精度．结果表明，引入背景场后，一方面有效地控制了边缘地区的发散现象，另一方面重构网格点上绝对误差在-0．25N0．25TECU之间的比例分别提高了约70％和100％，误差统计基本呈正态分布．可以通过引入更加精确的背景场或使用逐步订正方法进一步提高重构精度．
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| 关 键 词： | 电离层TEC地图 IRI-2007 反距离加权法 克里格方法 交叉检验 |
Technique of Reconstructing Ionospheric TEC Map With the Data of Single Station Based on the Background Field by Using IRI |
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| WENG Libin FANG Hanxian YANG Shenggao WANG Sicheng.Technique of Reconstructing Ionospheric TEC Map With the Data of Single Station Based on the Background Field by Using IRI[J].Chinese Journal of Space Science,2011,31(4). |
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| Authors: | WENG Libin FANG Hanxian YANG Shenggao WANG Sicheng |
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| Institution: | WENG Libin FANG Hanxian YANG Shenggao WANG Sicheng (Institute of Meteorology,PLA University of Science and Technology,Nanjing 211101) |
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| Abstract: | Owing to the sparse data,the reconstructing ionospheric maps are not accurate enough by using the interpolation methods directly,especially in the verges.In order to obtain better TEC maps,the reconstruction was performed by Inverse Distance Weighting and Kriging Methods with IRI-2007 used as the background field.The test produced a better performance according to using Cross-validation method.As a result,the new technique decreased the errors effectively,especially in the verges,and the proportions of abso... |
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| Keywords: | Ionospheric TEC map IRI-2007 Inverse distance weighting method Kriging method Cross-validation |
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