不同电离层改正方法对GPS定位精度的影响  

Influence of different ionosphere correction methods on the accuracy of GPS point positioning

作　　者：李建全 Li JianQuan(Guangzhou Road Survey and Design Co., Ltd., Guangzhou 511400, China)

机构地区：[1]广州市公路勘察设计有限公司,广东广州511400

出　　处：《矿山测量》2019年第2期61-64,共4页Mine Surveying

摘　　要：文中介绍了Klobuchar、双频消电离层组合和IGS网格模型三种普遍使用的GPS电离层改正方法,并利用实测数据分别对三种改正方法在GPS单点定位和精密单点定位模式下的改正效果进行评估。结论显示:单点定位时采用IGS网格模型改正效果最好;精密单点定位时必须采用双频消电离层组合模型才能获得高精度的定位结果。In this paper, correction methods of three popular GPS ionospheric for Klobuchar, dual-frequency ionosphere-free combination and IGS grid model were introduced. The correction effect of three correction methods were evaluated using the measured data in GPS single point positioning and precise single point positioning mode. Results showed that: the correction effect was best using IGS grid model in single point positioning and the dual-frequency ionosphere-free combination must be used to obtain the high-precision positioning results in precise single point positioning.

关 键 词：GPS定位精度 电离层 KLOBUCHAR模型 双频消电离层组合模型 IGS网格模型 

分 类 号：TD172[矿业工程—矿山地质测量]