CAJ | 학술논문

利用G PS双频观测数据建立高精度、准实时的区域电离层总电子含量（T EC ）模型是电离层研究的一个重要手段。文中探讨IGS观测站数据结合4阶球谐函数建立区域电离层格网模型的方法，并对硬件延迟（DCB ）和 T EC建模结果的可靠性进行分析，结果表明，DCB解算精度在0.4 ns以内，TEC内外精度优于1.4TECU （1TECU＝1016电子数／m2）和1.5TECU ，满足导航定位中电离层改正的需要。
이용G PS쌍빈관측수거건립고정도、준실시적구역전리층총전자함량（T EC ）모형시전리층연구적일개중요수단。문중탐토IGS관측참수거결합4계구해함수건립구역전리층격망모형적방법，병대경건연지（DCB ）화 T EC건모결과적가고성진행분석，결과표명，DCB해산정도재0.4 ns이내，TEC내외정도우우1.4TECU （1TECU＝1016전자수／m2）화1.5TECU ，만족도항정위중전리층개정적수요。
Using GPS dual‐frequency observation data to establish a high‐precision and near‐real‐time regional ionospheric total electron content (TEC) model is an important means of ionospheric research . This paper discusses the process of establishing the regional ionospheric grid model by using the data from nine European IGS stations with 4 order spherical harmonic function .Also ,the reliability of differential code bias (DCB) and TEC results are analyzed .The results show that DCB calculating accuracy is better than 0.4ns ,and the average internal and external accuracy of TEC are better than 1.4TECU (1TECU=1016electron/m2 ) and 1.5TECU ,respectively .So it can meet the needs of the ionosphere correction in the satellite navigation and positioning .