WAAS电离层延迟误差校正的网格算法

The Grid-based Algorithms for Ionospheric Correction

介绍了电离层中电磁波的传播特性 ,阐述了广域增强系统 WAAS中对电离层延迟的校正算法 ,分析了主控站 ( WMS)中基于网格的实时电离层校正算法 。

Navigation and positioning using the WAAS with single freaqency receivers suffers potentially from the unknown spatial variablity of ionospheric range delays.This will not only degrade navigation accuracy,but also can cause loss of tracking at the reference station and raise severe integrity warning problems.Firstly,the paper introduced the performance of ionosphere,Secondly,the paper studied in detail grid based ionospheric algorithms in wide master station(WMS),Every correction algorithms was deducted in detail along with the error analysis and propagation procedure in this paper.At last,the paper gave scheme in ionospheric correction.