电离层光度计TEC数据的有效性验证

测绘学报 ›› 2026, Vol. 55 ›› Issue (1): 10-24.

• 大地测量学与导航 • 上一篇

电离层光度计TEC数据的有效性验证

李威¹^,²(), 何相宜¹, 杨玲¹(), 符运日¹, 付利平³^,⁴^,⁵

^1.同济大学测绘与地理信息学院，上海　200092
^2.上海霄元创新中心，上海　201815
^3.中国科学院国家空间科学中心，北京　100190
^4.天基空间环境探测北京市重点实验室，北京　100190
^5.中国科学院空间环境态势感知技术重点实验室，北京　100190

收稿日期:2025-07-03 修回日期:2026-01-01 发布日期:2026-02-13
通讯作者: 杨玲 E-mail:13681868995@139.com;lingyang@tongji.edu.cn
作者简介:李威（1982—），男，博士，研究员，研究方向为空间态势感知。E-mail：13681868995@139.com
基金资助:
国家自然科学基金(42274030)

Validation of TEC data from the ionospheric photometer

Wei LI¹^,²(), Xiangyi HE¹, Ling YANG¹(), Yunri FU¹, Liping FU³^,⁴^,⁵

^1.College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China
^2.Shanghai Xiaoyuan Innovation Center, Shanghai 201815, China
^3.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
^4.Beijing Key Laboratory of Space-based Space Environment Detection, Beijing 100190, China
^5.Key Laboratory of Space Environment Situation Awareness Technology, Chinese Academy of Sciences, Beijing 100190, China

Received:2025-07-03 Revised:2026-01-01 Published:2026-02-13
Contact: Ling YANG E-mail:13681868995@139.com;lingyang@tongji.edu.cn
About author:LI Wei (1982—), male, PhD, researcher, majors in spatial situational awareness. E-mail: 13681868995@139.com
Supported by:
The National Natural Science Foundation of China(42274030)

摘要/Abstract

摘要：

搭载于风云三号D星的电离层光度计（IPM）是我国首台具备远紫外波段电离层探测能力的天基载荷，亟须对其反演获得的夜间总电子含量（TEC）数据开展深入的精度验证与质量评估。本文针对我国首台电离层光度计TEC（IPM-TEC）的可用性，以全球电离层格网产品（GIM-TEC）以及基于欧洲和中国区域连续运行基准站（CORS）反演的TEC数据（CORS-TEC）为参考，在全球和区域两个尺度上，计算系统偏差与数据噪声，针对IPM-TEC开展了为期两年的定量化评估与对比分析。试验结果表明：在全球尺度上，电离层平静期内，IPM-TEC与GIM-TEC在中低纬度区域（南北纬40°以内）表现出较高一致性，系统偏差整体低于2 TECU，数据噪声低于0.3 TECU，显示出该区域数据具有良好的可用性；而在区域尺度上，平静期欧洲与中国中低纬度区域的系统偏差均控制在2 TECU以内，进一步验证了光度计数据在中低纬区域的高有效性。研究结果表明，我国首台电离层光度计在电离层平静期、中低纬度区域具备较高的数据可用性，为后续基于光度计观测数据的电离层多源融合建模与误差校正提供了重要的技术参考。

关键词: 电离层光度计, 总电子含量, 全球一致性, 区域差异

Abstract:

The ionospheric photometer (IPM) carried on Fengyun-3D satellite is China's first space-based payload with the ability to detect the ionosphere in the far ultraviolet band. It is urgent to conduct in-depth accuracy verification and quality evaluation of the total electron content (TEC) data obtained from its inversion at night. This study focuses on the availability of China's first ionospheric photometer TEC (IPM-TEC). Using the global ionospheric map (GIM) (GIM-TEC) and TEC data inverted based on Continuous Operational Reference System (CORS-TEC) in Europe and China as references, a two-year quantitative evaluation and comparative analysis of IPM-TEC was conducted at both global and regional scales by calculating system bias and data noise. The experimental results show that on a global scale, during the ionospheric calm period, IPM-TEC and GIM-TEC exhibit high consistency in the mid to low latitude region (within 40°N/S), with an overall system deviation of less than 2 TECU (total electron content unit) and data noise of less than 0.3 TECU, indicating good availability of data in this region; at the regional scale, the systematic deviation between Europe and China in the mid low latitude region during the calm period is controlled within 2 TECU, further verifying the high validity of IPM data in the mid low latitude region. Overall, the research results indicate that China's first Ionospheric Photometer has high data availability during ionospheric calm periods and in mid to low latitude regions, providing important technical references for subsequent multi-source fusion modeling and error correction of the ionosphere based on the ionospheric photometer observation data.

Key words: ionospheric photometer, total electronic content, global consistency, regional differences

中图分类号:

P225

李威, 何相宜, 杨玲, 符运日, 付利平. 电离层光度计TEC数据的有效性验证[J]. 测绘学报, 2026, 55(1): 10-24.

Wei LI, Xiangyi HE, Ling YANG, Yunri FU, Liping FU. Validation of TEC data from the ionospheric photometer[J]. Acta Geodaetica et Cartographica Sinica, 2026, 55(1): 10-24.

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参数	设置
最小搜索半径R_min/km	800
最大搜索半径R_min/km	2100
最小有效IPP数量N_min	10
目标IPP数量N_target	60
基台值C₀/m	1.25
块金值C₁/m	0.45
去相关距离d_decorr/km	8000

电离层光度计TEC数据的有效性验证

Validation of TEC data from the ionospheric photometer

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