| 高阶电离层延迟对中国区域双差定位影响研究 |
| |
| 引用本文： | 周要宗,匡翠林,窦邵华.高阶电离层延迟对中国区域双差定位影响研究[J].大地测量与地球动力学,2019,39(5):506-510. |
| |
| 作者姓名： | 周要宗 匡翠林 窦邵华 |
| |
| 作者单位： | 中南大学地球科学与信息物理学院,长沙市麓山南路932号,410083;中南大学地球科学与信息物理学院,长沙市麓山南路932号,410083;中南大学地球科学与信息物理学院,长沙市麓山南路932号,410083 |
| |
| 摘 要： | 给出顾及高阶电离层延迟改正的双差定位模型，探讨中国区域VTEC的时空变化规律，分析高阶电离层延迟对L3观测值的影响。利用41个陆态网测站2015年全年的GNSS数据，基于Bernese 5.2软件的双差定位技术，系统研究高阶电离层延迟对中国区域双差定位的影响及其时空分布规律。结果表明，高阶电离层延迟对中国区域双差定位的影响与测站网型结构相关，明显存在0.5 a的周期变化，影响年均值大小为0～2 mm，且具有方向性差异，对高纬度测站的影响有向北偏移趋势，对低纬度测站的影响有向南偏移趋势。
|
| 关 键 词： | 高阶电离层延迟 双差定位 陆态网 TEC |
Analysing Higher-Order Ionospheric Effects on GNSS Double-Differenced Positioning in China Region |
| |
| ZHOU Yaozong,KUANG Cuilin,DOU Shaohua.Analysing Higher-Order Ionospheric Effects on GNSS Double-Differenced Positioning in China Region[J].Journal of Geodesy and Geodynamics,2019,39(5):506-510. |
| |
| Authors: | ZHOU Yaozong KUANG Cuilin DOU Shaohua |
| |
| Abstract: | First, based on the double-differenced positioning mathematical model and the VTEC temporal–spatial distribution of China region, we analyze the influence of higher-order ionospheric delay on L3 observation. Second, to investigate the temporal-spatial distribution characteristics of the higher-order ionospheric effect on GNSS double-differenced positioning in China region, GNSS data from 41 CMONOC stations spanning the year 2015 are processed based on the double-differenced positioning technology of BERNESE GNSS software version 5.2. Numerical results show that the influence of high-order ionospheric delay on double-differenced positioning in China region is related to the distribution of the selected stations, and there are obvious semi-annual variations and directional difference. With high latitude sites moving north and low latitude sites moving south, the size of the annual averages are up to 2 mm. |
| |
| Keywords: | higher-order ionospheric delay double-differenced positioning CMONOC TEC |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 |
