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- 2018
NeQuick模型算法研究及性能比较
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Abstract:
研究了NeQuick2算法改进及其实现方法，从不同角度分析了NeQuick2模型在全球区域和中国区域内的性能优势。一个太阳活动周期内，中国区域NeQuick2模型计算的电子总含量（total electron content，TEC）比NeQuick1模型精度有显著提升，改正精度与太阳活动水平具有较强的相关性，低年比高年的改善效果更为显著。以全球电离层数据（global ionosphere maps，GIM）为参考标准，中国中高纬区域太阳活动低年NeQuick2模型TEC的系统年平均偏差减少了76%，年平均均方根（root mean square，RMS）值减少了约72%。太阳活动高年NeQuick2模型TEC的系统年平均偏差减少了38%，平均RMS减少了13%左右，且中高纬区域改正精度优于低纬区域11%~13%。全球区域太阳活动峰值期间NeQuick2模型TEC比NeQuick1模型日平均偏差改善了25%，日平均RMS改善了30%左右。分别用NeQuick1和NeQuick2模型得出F2层顶部区域在太阳活动峰值期电子密度随高度剖面分布，顶部电子密度剖面精度改善近40%。最后分别得出了两个模型中国区域中高纬地区E和F1层区域在100 km、150 km和200 km高度的电子密度分布图，结果显示NeQuick2模型改善了电子密度分布状况，有效避免了NeQuick1在底部区域电子密度梯度不连续以及电离层异常结构的情况
| [1] | Radicella S M. The NeQuick Model Genesis, Uses and Evolution[J].<em>Annals of Geophysics</em>, 2009,52(3):417-422 |
| [2] | Wang Jun, Dang Yamin, Xue Shuqiang. The Application of NeQuick Model in China[J].<em>Science of Surveying and Mapping</em>, 2007,32(4):38-39(王军,党亚民,薛树强. NeQuick电离层模型在中国地区的应用[J].测绘科学,2007,32(4):38-39) |
| [3] | RadicellaS M, Zhang M L. The Improved DGR Analytical Model of Electron Density Height Profile and Total Electron Content in the Ionosphere[J]. <em>Annali di Geofisica</em>, 1995,38(1):35-41 |
| [4] | Arbesser-Rastburg B. The Galileo Single Frequency Ionospheric Correction Algoritm[C].The 3rd European Space Weather Week, Brussels, Belgium, 2006 |
| [5] | Prieto-Cerdeira R, Orus R, Arbesser-Rastburg B. Assessment of the Ionospheric Correction Algorithm for GALILEO Single Frequency Receivers[C].The 3rd ESA Workshop on Satellite Navigation User Equipment Technologies, Noordwijk, Netherland,2006 |
| [6] | Bidaine B,Prieto-Cerdeira R,Orus R. NeQuick:In-Depth Analysis and New Developments[C]. The 3rd ESA Workshop on Satellite Navigation User Equipment Technologies,Noordwijk, Netherland,2006 |
| [7] | Leitinger R, Zhang M L, Radicella S M. An Improved Bottomside for the Ionospheric Electron Density Model NeQuick[J]. <em>Annals of Geophysics</em>, 2005, 48(3):525-534 |
| [8] | Coisson P, Radicella S M, Leitinger R,et al.Topside Eelectron Density in IRI and NeQuick:Featuresand Limitations[J].<em>Advancesin Space Research</em>, 2006, 37:937-942 |
| [9] | Coisson P, Radicella S M. Ionospheric Topside Models Compared with Experimental Electron Density Profiles[J].<em>Annals of Geophysics</em>, 2005, 48(3):497-503 |
| [10] | Nava B, Coisson P, Radicella S M. A New Version of the NeQuick Ionosphere Electron Density Model[J]. <em>Journal of Atmospheric and Solar-Terrestrial Physics</em>, 2008, 70:1856-1862 |
| [11] | Hochegger G, Nava B, Radicella S M, et al. A Family of Ionospheric Models for Different Uses[J].<em>Physics and Chemistry of the Earth</em>, 2000, 25(4):307-310 |
| [12] | Radicella S M, Leitinger R. The Evolution of the DGR Approach to Model Electron Density Profiles[J].<em>Advances in Space Research</em>, 2001, 27:35-40 |
| [13] | Yang Zhe, Song Shuli, Xue Junchen, et al. Accuracy Assessment of Klobuchar Model and NeQuick Model in China[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2012,37(6):704-708)(杨哲,宋淑丽,薛军琛,等. Klobuchar模型和NeQuick模型在中国地区的精度评估[J].武汉大学学报·信息科学版,2012,37(6):704-708) |
