卫星导航系统电离层误差分析

Analysis of Ionosphere Delay Error of GPS

电离层延迟误差是卫星接收机的主要测距误差之一。电离层延迟误差具有多变性，不易准确描述。电离层延迟误差求解方法主要有单频接收机修正方法、双频接收机修正方法。选择单频接收机修正方法，易于实施，可部分消除电离层延迟误差；若需完全消除电离层延迟误差，获得高精度测距结果，可通过双频接收机修正方法实现。

The Ionosphere Delay Error is one of mainly measure distance error to satellite receiver. It is difficult to describe real status of Ionosphere, which could be influenced by lot of factors. We can use single frequency correct or dual-frequency correct to solve Ionosphere Delay Error. It＇s easy to apply single frequency correct that would reduce a half influence from Ionosphere Delay Error. If we need high precision measure distance result, dual-frequency correct could complete cancellation the error.