| Galileo电离层折射误差高阶项的四频改正方法 |
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| 引用本文： | 刘庆元,王虎,王潜心,包海.Galileo电离层折射误差高阶项的四频改正方法[J].测绘科学,2008,33(6):50-52. |
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| 作者姓名： | 刘庆元 王虎 王潜心 包海 |
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| 作者单位： | 中南大学信息物理工程学院,长沙,410083;中南大学信息物理工程学院,长沙,410083;中南大学信息物理工程学院,长沙,410083;中南大学信息物理工程学院,长沙,410083 |
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| 摘 要： | 研究了电离层对Galileo观测信号的主要影响及电离层折射误差模型。针对Galileo中的四个频率,系统推导了四个频率的电离层改正模型及相位观测值无电离层组合(LC组合)模型。该模型将电离层折射误差模型改正至三阶项,可进一步提高Galileo定位精度,同时,为Galileo定位提供了有力的技术手段。
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| 关 键 词： | Galileo 电离层折射误差 无电离层折射组合 |
Four-frequency methods for correcting higher-order ionospheric refractive error in Galileo |
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| LIU Qing-yuan,WANG Hu,WANG Qian-xin,BAO Hai.Four-frequency methods for correcting higher-order ionospheric refractive error in Galileo[J].Science of Surveying and Mapping,2008,33(6):50-52. |
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| Authors: | LIU Qing-yuan WANG Hu WANG Qian-xin BAO Hai |
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| Abstract: | The main effect on the Galileo signals of ionosphere and ionospheric refractive model are studied in this paper.Because four-frequency are included in the Galileo system,the four-frequency corrected model of ionospheric refractive error and the ionosphere-free combination model of four-frequency are deduced.The second-order ionospheric effect can be corrected and the positioning accuracy can be increased through these models.At the same time,these models supply the strong support in the Galileo techniques. |
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| Keywords: | Galileo |
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