Ionospheric disturbance monitoring and GNSS positioning performance analysis during geomagnetic storms
-
摘要: 为分析磁暴期间电离层扰动规律及GNSS定位性能变化，基于国际GNSS服务(International GNSS Service，IGS)全球观测数据及全球电离层图 (global ionospheric map，GIM)，对2018年8月26日地磁暴事件引发的北半球地区电离层总电子含量(total electron content，TEC)异常变化和GPS定位性能进行分析. 结果表明：北半球TEC异常存在纬度差异，高纬地区响应快，低纬地区异常值变化大，达12 TECU；磁暴期间高纬地区观测数据周跳变化明显，周跳比数值与磁静日相比最大下降61.84%；磁暴期间所有测站数据完整率下降，高纬地区下降响应快，下降严重，达38.65%，研究区所有测站数据完整率下降出现在磁暴恢复相，数据质量与TEC异常变化规律较为一致；对GPS双频动态精密单点定位(precise point positioning，PPP)结果进行分析发现，磁暴期间高纬地区测站定位误差显著增大，水平和垂直方向均方根误差(root mean squared error，RMSE) 增至约0.7 m及1.8 m.
-
关键词:
- 磁暴 /
- 电离层监测 /
- 电离层电子总含量(TEC) /
- 数据质量分析 /
- 精密单点定位(PPP)
Abstract: To analyze the disturbance patterns in the ionosphere and the changes in GPS positioning performance during magnetic storms, based on the IGS (International GNSS Service) global observation data and the GIM (Global Ionospheric Map), we conducted an analysis of the abnormal variation of total electron content (TEC) in the Northern Hemisphere during the geomagnetic storm event on August 26, 2018, as well as the GPS positioning performance. The results show that the TEC anomalies in the Northern Hemisphere exhibit latitude differences, with faster responses in higher latitude regions and larger variations in lower latitude regions, reaching up to 12 TECU (total electron content unit). During the magnetic storm, significant cycle slips were observed in the higher latitude regions, with a maximum decrease of 61.84% compared to magnetically quiet days. The data integrity of all stations decreased during the storm, with higher latitude regions experiencing a faster and more severe decline, reaching 38.65%. The decrease in data integrity of all stations occurred during the recovery phase of the storm. The data quality is consistent with the pattern of TEC anomalies. Analyzing the results of GPS dual-frequency dynamic precise point positioning (PPP), it was found that the positioning errors at higher latitude stations during the magnetic storm significantly increased, with horizontal and vertical root mean square errors reaching approximately 0.7 m and 1.8 m, respectively. -
表 1 数据质量分析参数设置及处理策略
序号 选项 处理策略 1 系统 GPS 2 周跳探测 MW组合法和电离层残差法联合探测周跳 3 探测观测跳变阈值 600 s 4 截止高度角 0° 5 探测观测缺失阈值 1 800 s 
下载: 导出CSV
表 2 GPS精密单点定位处理策略
序号 选项 处理策略 1 测站坐标 动态PPP 2 定位模型 PPP卡尔曼滤波 3 电离层改正 双频消电离层组合 4 对流层改正 Estimate ZTD+Grad 5 卫星轨道及钟差 IGS精密星历 6 天线PCO/PCV Igs14.atx 7 截止高度角 15°
下载: 导出CSV
-
[1] GONZALEZ W D, JOSELYN J A, KAMIDE Y, et al. What is a geomagnetic storm?[J]. Journal of geophysical research, 1994(99): 5771-5792. DOI: 10.1029/93JA02867 [2] SZUSZCZEWICZ E P, LESTER M, WILKINSON P, et al. A comparative study of global ionospheric responses to intense magnetic storm conditions[J]. Journal of geophysical research atmospheres, 1998, 103(A6): 11665-11684. DOI: 10.1029/97JA01660 [3] 姜阳厚, 刘晨, 周鸿芸. 太阳活动峰年北美中纬电离层分层结构变化[J]. 地理空间信息, 2022, 20(11): 75-80. DOI: 10.3969/j.issn.1672-4623.2022.11.017 [4] WIELGOSZ P, KASHANI I, GREJNER-BRZEZINSKA D. Analysis of long-range network RTK during a severe ionospheric storm[J]. Journal of geodesy, 2005(79): 524-531. DOI: 10.1007/s00190-005-0003-y [5] JACOBSEN K S, SCHAFER S. Observed effects of a geomagnetic storm on an RTK positioning network at high latitudes[J]. Journal of space weather and space climate, 2012 2(2): A260000. DOI: 10.1051/swsc/2012013 [6] JACOBSEN K S, ANDALSVIK Y L. Overview of the 2015 St. Patrick’s day storm and its consequences for RTK and PPP positioning in Norway[J]. Journal of space weather space clim. 2016(6): A9. DOI: 10.1051/swsc/2016004 [7] ZHANG D H, MAN F, ZUO X, et al. The seasonal dependence of cycle slip occurrence of GPS data over China low latitude region[J]. Science in China(series E: technological sciences), 2007, 50(4): 422-429. DOI: 10.1007/s11431-007-0059-4 [8] CHENG N, SONG S L, LI W. Multi-scale ionospheric anomalies monitoring and spatio-temporal analysis during intense storm[J]. Atmosphere 2021, 12(2): 215. DOI: 10.3390/atmos12020215 [9] 全林, 薛军琛, 胡小工, 等. 中国区域GPS单频点定位在不同类型磁暴主相期间定位性能分析[J]. 地球物理学报, 2021, 64(9): 3030-3047. DOI: 10.6038/cjg2021P0331 [10] 王格, 王宁波, 李子申, 等. 地磁暴期间北半球高纬度地区电离层变化特征及对精密定位的影响[J]. 空间科学学报, 2021, 41(2): 261-272. DOI: 10.11728/cjss2021.02.261 [11] LUO X M, GUO S F, LOU Y D, et al. Assessing the performance of gps precise point positioning under different geomagnetic storm conditions during solar cycle 24[J]. Sensors, 18(6): 1784. DOI: 10.3390/s18061784 [12] NIE W F, ADRIA R G, WANG Y, et al. On the global kinematic positioning variations during the september 2017 solar flare events[J]. Journal of geophysical research: space physics, 2022, 127(8): 1-21. DOI: 10.1029/2021JA030245 [13] 欧明, 吴家燕, 陈龙江, 等. 一次中等磁暴期间全球电离层TEC及ROTI指数变化分析[J]. 空间科学学报, 2021, 41(6): 887-897. DOI: 10.11728/cjss2021.06.887 [14] 滕月昊, 贾小林, 雷盼荣, 等. iGMAS多品牌监测接收机数据质量分析[J]. 全球定位系统, 2022, 47(1): 59-67. DOI: 10.12265/j.gnss.2021083104 [15] CHERNIAK I, KRANKOWSKI A, ZAKHARENKOVA I. Observation of the ionospheric irregularities over the northern hemisphere: methodology and service[J]. Radio science, 2014, 49(8): 653-662. DOI: 10.1002/2014RS005433 [16] 王格. 北半球高纬度地区电离层闪烁特性研究[D]. 北京: 中国地质大学, 2019. [17] 朱军桃, 刘玉升, 林知宇, 等. 2018-08-25~29期间全球电离层TEC对地磁暴的响应分析[J]. 大地测量与地球动力学, 2022, 42(7): 661-668. DOI: 10.14075/j.jgg.2022.07.001 [18] 聂文锋, 徐天河, 杨玉国, 等. 一种自适应的卫星导航载波观测值周跳探测阈值确定方法: CN202210401196. X[P]. 2020-06-28. -
点击查看大图
图(8) / 表(2)
计量
- 文章访问数: 496
- HTML全文浏览量: 119
- PDF下载量: 67
- 被引次数: 0
