聂文锋, 胡伍生, 潘树国, 宋玉兵. 利用GPS双频数据进行区域电离层TEC提取[J]. 武汉大学学报 ( 信息科学版), 2014, 39(9): 1022-1027. DOI: 10.13203/j.whugis20130046
引用本文: 聂文锋, 胡伍生, 潘树国, 宋玉兵. 利用GPS双频数据进行区域电离层TEC提取[J]. 武汉大学学报 ( 信息科学版), 2014, 39(9): 1022-1027. DOI: 10.13203/j.whugis20130046
NIE Wenfeng, HU Wusheng, PAN Shuguo, SONG Yubing. )Extraction of Regional Ionospheric TEC from GPS Dual Observation[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1022-1027. DOI: 10.13203/j.whugis20130046
Citation: NIE Wenfeng, HU Wusheng, PAN Shuguo, SONG Yubing. )Extraction of Regional Ionospheric TEC from GPS Dual Observation[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1022-1027. DOI: 10.13203/j.whugis20130046

利用GPS双频数据进行区域电离层TEC提取

)Extraction of Regional Ionospheric TEC from GPS Dual Observation

  • 摘要: 目的 从利用GPS提取区域电离层总电子含量(total electron content,TEC)的基本原理出发,解决了伪距观测值优化以及硬件延迟(DCB)处理问题,并将提取的TEC信息与欧洲定轨中心(CODE)计算的全球电离层(GIM)模型内插值应用在单频精密单点定位中,进行电离层延迟改正实验。结果表明,利用本文提取的TEC值进行单频精密单点定位电(PPP)离层延迟改正时,点位精度能提高到0.2~0.4m左右,明显优于利用GIM内插值的改正精度。

     

    Abstract: Objective We introduce a measurement for extracting the regional ionosphere TEC(total electron con-tent)from GPS dual observations in detail.From the basic principles for extracting TEC using GPS,we focus on solving two key problems.One was to improve the accuracy of pseudo-range observa-tions,and the other was to detach the DCB(differential code bias)of the satellites and receivers.Fur-thermore,the extracted TEC and TEC calculated by the CODE(Center for Orbit Determination in Eu-rope)were used as an ionospheric delay correction in a single-frequency point positioning model.Theresults show that the point accuracy can reach to 0.2-0.4musing the extracted TEC correction,a sig-nificantly improvement over the use of an interpolated GIM correction.

     

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