电离层误差对卫星导航系统测距误差影响分析

Analysis on Ionosphere Delay Error Effect Satellite Navigation System Error

电离层延迟误差是单频接收机的主要定位误差之一。电离层延迟误差具有多变性,不易准确描述。本文探讨了几种常用单频接收机电离层延迟改正模型,Bent模型IRI模型、Klobuchar模型、NeQuick模型以及IGGSH模型。并利用单频GPS接收机实测数据统计分析各模型对定位误差的修正效果,为单频接收机用户选择合适的电离层改正模型提供参考。

The ionosphere delay error is one of mainly measure distance error to satellite receiver. It is difficult to describe truly status of ionosphere, because lots of factor will influence the status. In this paper, several commonly used ionosphere delay correction model, including Bent model, IRI model, Klubuchar model, Ne Quick model and IGGSH model are discussed and the correction result of position error is analyzed by using the single frequency GPS receiver data. The result of statistical analysis and simulation provide a reference for the single frequency GPS receiver user to select the suitable ionosphere delay correction model.