| Galileo改正电离层折射误差高阶项的方法 |
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| 引用本文： | 刘庆元,王虎,王潜心,包海,张长书.Galileo改正电离层折射误差高阶项的方法[J].测绘工程,2008,17(2):9-12. |
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| 作者姓名： | 刘庆元 王虎 王潜心 包海 张长书 |
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| 作者单位： | 中南大学,信息物理工程学院,湖南,长沙,410083;中南大学,信息物理工程学院,湖南,长沙,410083;中南大学,信息物理工程学院,湖南,长沙,410083;中南大学,信息物理工程学院,湖南,长沙,410083;中南大学,信息物理工程学院,湖南,长沙,410083 |
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| 摘 要： | 在研究电离层折射对Galileo测量的影响及电离层折射误差模型的基础上，针对Galileo系统中的4个频率，提出运用四频观测值将电离层折射误差改正至三阶项的方法，并推导了四频载波相位观测值无电离层折射组合方程，从而进一步提高了Galileo的定位精度。
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| 关 键 词： | Galileo 电离层折射误差 无电离层折射组合 |
| 文章编号： | 1006-7949(2008)02-0009-04 |
| 修稿时间： | 2007年5月6日 |
Galileo methods of high-order ionospheric refraction correction |
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| LIU Qing-yuan,WANG Hu,WANG Qian-xin,BAO Hai,ZHANG Chang-shu.Galileo methods of high-order ionospheric refraction correction[J].Engineering of Surveying and Mapping,2008,17(2):9-12. |
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| Authors: | LIU Qing-yuan WANG Hu WANG Qian-xin BAO Hai ZHANG Chang-shu |
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| Institution: | LIU Qing-yuan, WANG Hu, WANG Qian-xin, BAO Hai, ZHANG Chang-shu (School of Info-Physics and Geomatics Engineering, Central South University, Changsha 410083,China) |
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| Abstract: | This paper investigates theoretical models of the ionospheric refractive error.Because four-frequency are included in the Galileo system,new possibilities for the refinement of ionospheric modeling and reduction of the ionospheric error in Galileo measurements appear.A four-frequency method of correcting the third ionospheric refraction is presented and a four-frequency ionosphere-free combination method is proposed for the Galileo system.It is anticipated that the proposed refraction correction methods will play role in the Galileo system. |
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| Keywords: | Galileo ionospheric refractive error ionosphere-free combination |
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