多频GNSS电离层折射误差修正方法

发布时间：2018-03-05 11:03

本文选题：GPS　切入点：BDS　出处：《宇航计测技术》2016年01期 　论文类型：期刊论文

【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。
[Abstract]:Aiming at the characteristics of large ionospheric refraction error, the ionospheric refraction errors of GPS(Global Positioning system and BDS(Bei Dou Navigation Satellite system are analyzed respectively, and the different frequencies are linearly combined. The combined ionospheric refraction error is calculated. This method corrects the ionospheric refraction error of the first order term, the first order term of the third frequency term and the second term of the third frequency term. As the ionospheric delay is corrected, the observed noise is amplified. This paper analyzes and compares the observed noise of different frequency combinations, which provides a theoretical method for the selection of optimal frequency combinations.
【作者单位】：中国科学院国家空间科学中心;中国科学院大学;
【分类号】：P228.4

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