电离层E/F 层闪烁对GPS TEC 变化率的影响

taptap下载安装安卓学报

电离层E/F 层闪烁对GPS TEC 变化率的影响

尹萍，李清宇

（taptap下载安装安卓电子信息与自动化学院，天津300300）

收稿日期:2017-12-25 修回日期:2018-03-13 出版日期:2018-10-25 发布日期:2018-11-19
作者简介:尹萍（1970—），女，天津人，副研究员，博士，研究方向为卫星导航（GNSS）技术、电离层/大气层遥感遥测、层析成像与探测.
基金资助:
国家重点研发计划项目（2016YFB0502402）

Impact of E/F layer ionospheric scintillation on TEC changing rate of GPS

YIN Ping, LI Qingyu

（College of Electronic Information and Automation, CAUC, Tianjin 300300, China）

Received:2017-12-25 Revised:2018-03-13 Online:2018-10-25 Published:2018-11-19

摘要/Abstract

摘要： 电离层闪烁是一种能够降低导航性能的自然现象,主要发生在极区和低纬度地区电离层的不同高度层中,包括E 层和F 层。为研究电离层E/F 层闪烁对地面站估算的GPS TEC(total electron content)变化率指数(ROTI)的不同影响,借助COSMIC 观测系统以及高速率GPS 双频大地测量数据展开详细分析,同时也探讨GISM 模型对其的预测能力。结果表明院电离层E 层发生强闪烁(S4 > 0.6),GPS ROTI 未发生较大变化(ROTI≈0.02 TECU/min);而F 层发生强闪烁时,ROTI 则出现明显变化(ROTI≥2 TECU/min);GISM 模型能够预测香港区域电离层夜间发生的强闪烁(预测值S4≥0.6),但对于白天发生的闪烁模型预测S4 结果均为0,此外,GISM 模型预测结果中对电离层E/F 层闪烁并无区分。

关键词: 电离层E/F 层闪烁, COSMIC, ROTI, GISM 模型

Abstract: As a natural phenomenon which is possible to reduce navigation performance, ionospheric scintillation mainly occurs in different heights of ionosphere layers at polar area and low latitudes including E/F layers; In order to investigate the effects of E/F layer ionospheric scintillation on ROTI estimated by GPS ground stations, COSMIC and high rate GPS dual-frequency geodetic surveying data are used to conduct detailed analyses. Meanwhile, the predicting ability of GISM is also investigated. Result shows that GPS ROTI is small (ROTI≈0.02TECU/min) when E-layer strong scintillation occurs (S4>0.6), however, ROTI becomes very large (ROTI≥2 TECU/min) when F-layer strong scintillation occurs. Take Hong Kong district as instance, GISM is capable to predict ionospheric scintillation occurring at night(S4predictedvalue≥0.6)while predicted S4 value of daytime scintillation is totally zero. Besides, there is no difference between ionospheric scintillation of E/F layers according to GISM predicted results.

Key words: E/F-layer ionospheric scintillation, COSMIC, ROTI, GISM

中图分类号:

TN967.1

尹萍，李清宇. 电离层E/F 层闪烁对GPS TEC 变化率的影响[J]. taptap下载安装安卓学报.

YIN Ping, LI Qingyu. Impact of E/F layer ionospheric scintillation on TEC changing rate of GPS[J]. .

参考文献 16

[1]	赵莹. GNSS 电离层掩星反演技术及应用研究[D]. 武汉: 武汉大学,2011.
[2]	AARONS J, WHITNEY H E, ALLEN R S. Global morphology of ionosphericscintillation[J]. Proceedingsof theIEEE,1982,70(4):360-378.
[3]	BASUS,MACKENZIE E, BASUS. Ionosphericconstraints on VHF/UHF communications links during solar maximum and minimum periods[J].Radio Science，2016，23（3）：363-378.
[4]	KINTNER P M, LEDVINA B M, DE PAULA E R. GPS and ionospheric scintillation[J]. Space Weather, 2007, 5(9): 1-23.
[5]	周彩霞. 中低纬电离层不规则体及闪烁特性研究[D]. 西安: 西安电子科技大学, 2014.
[6]	PI XINGCAN, MANNUCCI A J, LINDQWISTER U J, et al. Monitoring of global ionospheric irregularities using the worldwide GPS network[J].Geoph-ysical Research Letters, 1997, 24（18）: 2283-2286.
[7]	CHANG DENGBAI, HUANG JIANG, KONG DEBAO, et al. Temporal and spatial distributions of TEC depletions with scintillations and ROTI over south China[J]. Advance in Space Research, 2015, 55(1): 259-268.
[8]	曾桢, 胡雄, 张训械, 等. 电离层GPS 掩星观测反演技术[J].地球物理学报, 2004, 47(4): 578-583.
[9]	BENIGUEL Y. Global ionospheric propagation model(GIM): A global ionospheric propagation model for scintillations of transmitted signals[J]. Radio Science, 2002, 37(3): 1032-1044.
[10]	张东和, 萧佐. 利用GPS 计算TEC 的方法及其对电离层扰动的规则[J]. 地球物理学报, 2000, 43(4): 451-458.
[11]	YU XIAO, YUE XINAN, ZHEN WEIMIN, et al. On the occurrence of F-region irregularities over Haikou retrieved from COSMIC GPS radio occultation and ground-based ionospheric scintillation monitor observations[J]. Radio Science, 2017, 52(1): 34-48.
[12]	胡连欢, 宁百齐, 李国主. 海南地区电离层闪烁观测与GISM 模式预测的比较分析[J]. 空间科学学报, 2007, 27(5): 384-390.
[13]	盛冬生, 赵振维, 孙树计, 等. GISM 模型在中国低纬地区的适用性分析[J]. 空间科学学报, 2014, 34(2): 154-159.
[14]	KINTNER P M, LEDVINA B M, PAULA E R D, et al. Size, shape,orientation, speed, and duration of GPS equatorial anomaly scintillations[J]. Radio Science, 2004, 39(2): 1-23.
[15]	XU LIANG，XU JISHENG，ZHU JIE，et al. GPS measurements of ionospheric irregularity drifts and their initial results[J]. Chinese Journal of Geophysics, 2009, 52(1): 1-12.
[16]	SINNO K，KAN M. Ionospheric scintillation and fluctuation of Faraday rotation caused by spread-F and sporadic-E over Kokubunji[J]. Journal of the Radio Research Laboratory, 1980, 27(122): 53-77.