Deduction of Ionospheric Delay and its Features
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摘要: 电离层延迟是影响全球导航卫星系统(GNSS)导航定位精度的重要来源,而如何正确理解测距码和载波受到的电离层延迟及其特性一直是本科教学中的重点、难点问题。本文从相、码速度,即相速和群速的计算作为出发点,通过公式严格推导出对应的电离层延迟,并直观地获取了电离层延迟特性.Abstract: Ionospheric delay is one of the most important error sources on GNSS positioning and navigation precision. However, it has long been a focus issue on how to understand the difference of ioniospheric delay on the pseudorange derived from code and carrier phase and their corresponding features. This paper deduces the ionopheric delay of code range and carrier phase range from the phase velocity and group velocity, finally obtains their features
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Key words:
- phase velocity /
- group velocity /
- ionospheric delay /
- ionospheric delay features
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