| 多频GNSS电离层折射误差修正方法CSCD |
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| 引用本文： | 赵彦珍,苏建峰.多频GNSS电离层折射误差修正方法CSCD[J].宇航计测技术,2016,36(1):42-46. |
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| 作者姓名： | 赵彦珍 苏建峰 |
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| 作者单位： | 1、中国科学院国家空间科学中心，北京 100190；;
2、中国科学院大学，北京 100049 |
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| 摘 要： | 针对电离层折射误差较大的特点,分别对GPS(Global Positioning System)和BDS(Bei Dou Navigation Satellite System)的单一频率的电离层折射误差进行了分析,并将不同频率进行线性组合,计算出组合后的电离层折射误差。此方法修正了双频一阶项、三频一阶项和三频二阶项电离层折射误差。由于电离层延迟修正的同时会放大观测噪声,为此分析比较了不同频率组合修正后的观测噪声,为最佳频率组合的选取提供了理论方法。
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| 关 键 词： | GPS BDS 电离层折射误差 三频二阶项 观测噪声 |
GNSS Multi-Frequency Correction Methods of Ionospheric Refraction Error |
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| ZHAO Yan-zhen,SU Jian-feng.GNSS Multi-Frequency Correction Methods of Ionospheric Refraction Error[J].Journal of Astronautic Metrology and Measurement,2016,36(1):42-46. |
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| Authors: | ZHAO Yan-zhen SU Jian-feng |
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| Institution: | 1、National Space Science Center, Chinese Academy of Sciences, Beijing 100190；;
2、University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | Ionospheric refraction error is relatively large, single frequency refraction error of GPS(Global Positioning System)and BDS (BeiDou Navigation Satellite System) is analyzed. Then, different frequencies of GPS and BDS linear combination are researched in this paper. Three multi-frequency correction methods such as dual-frequency of one order, triple-frequency of one order and triple-frequency of two orders are discussed. Ionospheric delay correction will also enlarge the observation noises, so the observation noises of each correction method are analyzed and compared. Besides, a theoretical approach to select the best frequency combinations is proposed. |
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| Keywords: | GPS BDS Ionospheric refraction error Triple-frequency of two orders Observation noises |
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