多GNSS全球电离层建模特性及其精度检验

赵文娇; 王虎; 党亚民; 白贵霞

doi:10.11728/cjss2015.03.306

多GNSS全球电离层建模特性及其精度检验

doi: 10.11728/cjss2015.03.306

赵文娇^1,2,
王虎^1, ,,
党亚民¹,
白贵霞¹

1.
中国测绘科学研究院北京 100830
2.
山东科技大学测绘科学与工程学院青岛 266510

基金项目: 国家自然科学基金青年基金项目(41404034,41374014)和中国测绘科学研究院基本科研业务费项目(7771405)共同资助

详细信息

通讯作者:
王虎,E-mail:whxxf82@126.com

中图分类号: P352
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出版历程
- 收稿日期: 2014-06-09
- 修回日期: 2014-06-19
- 刊出日期: 2015-05-15

Characteristics of Multi-GNSS Global Gonospheric Godeling and Gnalysis of the Accuracy

1.
Chinese Academy of Surveying and Mapping, Beijing 100830
2.
Collrge of Geomatics, Shandong University of Science and Technology, Qingdao 266510

摘要

摘要: 分别以GPS单系统和融合BDS, GPS, GLONASS 三系统两种方案, 采用载波相位平滑伪距观测值和球谐函数, 构建了全球电离层延迟模型并进行了对比和分析. 本文以GPS单系统和融合三系统两种方法反演了2014年1月每日电离层变化过程, 解算得出了频间偏差的月综合产品, 并对结果进行了对比和分析. 事实上, 三系统融合不仅增加了可观测的卫星数, 而且改善了穿刺点的几何分布. 分析结果表明, 三系统融合反演全球电离层在精度上优于GPS 单系统, 均有5~10TECU的提高. 计算得到的频间偏差结果显示, GPS优于GLONASS, BDS稳定性则较次之.
- 电离层 /
- 球谐函数 /
- 频间偏差
Abstract: The model of ionospheric delay correction is established by only GPS and by fusing BDS, GPS and GLONASS with observations of pseudo distance smoothed by carrier phase and spherical harmonics. And some experiments of the global ionospheric inversion have been done. The variations process of ionospheric is fused daily in January, 2014 to obtain monthly comprehensive differential code bias product and did some analysis on the accuracy of the products. The fusion of the three systems not only increases the number of satellites observation but also improves the geometric distribution of the puncture point. The analysis result shows that the accuracy of inversion of global ionospheric of three system fusions is better than GPS system alone, about 5 to 10 increase in TECU. The Precision of monthly comprehensive differential code bias product of GPS is better than GLONASS, while the BDS stability is poor.
- Ionosphere /
- Spherical harmonics /
- Differential code bias

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参考文献(15)

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