1 Hz GNSS电离层相位闪烁因子提取及在北极区域的验证

doi:10.11947/j.AGCS.2021.20200454

测绘学报 ›› 2021, Vol. 50 ›› Issue (3): 368-383.doi: 10.11947/j.AGCS.2021.20200454

1 Hz GNSS电离层相位闪烁因子提取及在北极区域的验证

赵东升¹, 李旺¹, 李宸栋², 唐旭³, 张克非¹

1. 中国矿业大学环境与测绘学院, 江苏徐州 221116;
2. 宁波诺丁汉大学理工学院, 浙江宁波 315100;
3. 南京信息工程大学遥感与测绘学院, 江苏南京 210044

收稿日期:2020-09-21 修回日期:2021-01-18 发布日期:2021-03-31
通讯作者: 张克非 E-mail:profkzhang@qq.com
作者简介:赵东升(1992-),男,博士,讲师,研究方向为GNSS定位、GNSS遥感、电离层闪烁监测与预报。E-mail:dszhao_gnss@foxmail.com
基金资助:
国家自然科学基金（41730109；41874040；42074226）；江苏省自然科学基金（BK20200664；BK20200646）；中央高校基本科研业务费（2020QN30；2020QN31）；徐州市重点项目（KC19111）；江苏省优势学科建设工程项目（PAPD）；江苏省双创博士项目

Extracting an ionospheric phase scintillation index based on 1 Hz GNSS observations and its verification in the Arctic region

ZHAO Dongsheng¹, LI Wang¹, LI Chendong², TANG Xu³, ZHANG Kefei¹

1. School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China;
2. Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo 315100, China;
3. School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China

Received:2020-09-21 Revised:2021-01-18 Published:2021-03-31
Supported by:
The National Natural Science Foundations of China(Nos. 41730109;41874040;42074226);The Natural Science Foundation of Jiangsu Province(Nos. BK20200664;BK20200646);The Fundamental Research Funds for the Central Universities(Nos. 2020QN30;2020QN31);The Xuzhou Key Project(No. KC19111);The Priority Academic Program Development of Jiangsu Higher Education Institutions;The Jiangsu Dual Creative Doctors Project

摘要/Abstract

摘要： 电离层闪烁作为北极区域频发的一种天文灾害，会影响全球导航卫星系统（GNSS）时空服务，需对其进行有效的监测。监测电离层闪烁通常需要高采样频率（50 Hz）的电离层闪烁接收机，但其分布有限，难以提供较大区域（如北极区域）的全面监测。为此本文以1 Hz GNSS观测数据为基础，详细研究了利用大地测量趋势分离、精密单点定位和小波变换等技术提取载波相位观测值中电离层闪烁信号的相关经验参数和方法，构建了可用于监测电离层闪烁的相位闪烁因子，并利用加拿大高纬度北极电离层闪烁监测网络（CHAIN）提供的11个测站188 d的观测数据对其有效性和准确性进行了验证。结果表明，与常用的ROTI因子相比，本文所提出的闪烁因子与ROTI均能有效地探测到电离层闪烁的发生，但是本文提出的闪烁因子与电离层闪烁接收机直接给出的相位闪烁因子具有更好的相关性，尤其是在有强电离层闪烁发生的时段，这说明该闪烁因子具有更为优良的电离层闪烁监测能力。

关键词: 全球导航卫星系统, 电离层闪烁, 相位闪烁因子, 1 Hz采样频率数据, 监测

Abstract: The ionospheric scintillation, as one of the astronomical disasters occurring frequently in Arctic regions, poses great challenges to GNSS positioning navigation and timing (PNT) services. This calls for an urgent need in studying and effectively monitoring the scintillation to overcome its adverse impact. With the capability of high frequency sampling, ionospheric scintillation monitoring receivers (ISMR) are usually required to monitor the ionospheric scintillation, but the distribution of ISMR restricts the comprehensive monitoring in larger areas (such as the Arctic region). Therefore, based on GNSS observations with 1 Hz sampling, this paper studies the relevant empirical parameters and methods of extracting the ionospheric scintillation signal from the carrier phase observations by using geodetic detrending, precise point positioning and wavelet transform techniques, to construct a new phase scintillation index, which can be used to monitor the ionospheric scintillation. Its effectiveness and accuracy are verified by 188-day observations from 11 stations provided by the Canadian High Arctic Ionospheric Network (CHAIN). The results show that, compared with the commonly used ROTI index, both the scintillation index proposed in this paper and ROTI can effectively detect the occurrence of ionospheric scintillation, but the scintillation index proposed in this paper has a better correlation with the phase scintillation index given by ISMR, especially during periods with strong ionospheric scintillation, indicating that the proposed scintillation index has better ionospheric scintillation monitoring capability.

Key words: GNSS, ionospheric scintillation, phase scintillation index, 1 Hz sampling data, monitoring

中图分类号:

P228

赵东升, 李旺, 李宸栋, 唐旭, 张克非. 1 Hz GNSS电离层相位闪烁因子提取及在北极区域的验证[J]. 测绘学报, 2021, 50(3): 368-383.

ZHAO Dongsheng, LI Wang, LI Chendong, TANG Xu, ZHANG Kefei. Extracting an ionospheric phase scintillation index based on 1 Hz GNSS observations and its verification in the Arctic region[J]. Acta Geodaetica et Cartographica Sinica, 2021, 50(3): 368-383.

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1 Hz GNSS电离层相位闪烁因子提取及在北极区域的验证

Extracting an ionospheric phase scintillation index based on 1 Hz GNSS observations and its verification in the Arctic region

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