基于GPS全球电离层地图的电离层总电子含量(TEC)全球变化

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES Momona Ethiopian Journal of Science Pub Date : 2017-11-30 DOI:10.4314/mejs.v9i2.2
Hintsa Gebreselasse, G. Abraha
{"title":"基于GPS全球电离层地图的电离层总电子含量(TEC)全球变化","authors":"Hintsa Gebreselasse, G. Abraha","doi":"10.4314/mejs.v9i2.2","DOIUrl":null,"url":null,"abstract":"This paper is aimed to investigate diurnal, monthly and seasonal variation of  ionospheric total electronic content (TEC) obtained from two GPS satellites IGS and COD and to inspect mean VTEC Correlation between the two satellites by the year  of 2008. TEC is defined by the integral of electron density in a 1 m 2 column along  the signal transmission path. It is an important parameter to monitor possible space weather impacts. The processed and archived data taken from IGS and COD  satellites has been imported in to a MATLAB code which gave us the results of the  value of VTEC. Results of the two satellites revealed that, Out of the selected  equinox and solstice day’s maximum value of TEC is recorded on March 20/2008  over North and South west equator due to the maximum solar radiation reaching to  the ionosphere of the Earth. On the contrary, the Minimum peak ionospheric TEC  value is recorded on June 21/2008 over south Asia particularly Srilanka and  Bangladesh due to emission of low solar radiation. As regards to monthly variations  of ionospheric TEC, results of IGS and COD satellites show that highest mean TEC  value is recorded on March and July recorded the least peak TEC value. Results  regarding to seasonal variation also revealed that E-Season recorded maximum  TEC value and least TEC value is recorded on J-Season. The observations of the two satellites also show that the mean TEC value presents stronger solar activity sensitivity at lower-latitude bands than the middle and high latitudes. In general,  there was a very high correlation between Mean TEC value recorded by IGS and COD satellites by the year of 2008 in all low, middle and high latitudes. Keywords : IGS and COD satellites, GPS, Ionosphere, Low, middle and  high-latitudes, TEC.","PeriodicalId":18948,"journal":{"name":"Momona Ethiopian Journal of Science","volume":null,"pages":null},"PeriodicalIF":0.3000,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4314/mejs.v9i2.2","citationCount":"2","resultStr":"{\"title\":\"Global Variations of Ionospheric Total Electron Content (TEC) Derived from GPS Global Ionospheric Maps\",\"authors\":\"Hintsa Gebreselasse, G. Abraha\",\"doi\":\"10.4314/mejs.v9i2.2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper is aimed to investigate diurnal, monthly and seasonal variation of  ionospheric total electronic content (TEC) obtained from two GPS satellites IGS and COD and to inspect mean VTEC Correlation between the two satellites by the year  of 2008. TEC is defined by the integral of electron density in a 1 m 2 column along  the signal transmission path. It is an important parameter to monitor possible space weather impacts. The processed and archived data taken from IGS and COD  satellites has been imported in to a MATLAB code which gave us the results of the  value of VTEC. Results of the two satellites revealed that, Out of the selected  equinox and solstice day’s maximum value of TEC is recorded on March 20/2008  over North and South west equator due to the maximum solar radiation reaching to  the ionosphere of the Earth. On the contrary, the Minimum peak ionospheric TEC  value is recorded on June 21/2008 over south Asia particularly Srilanka and  Bangladesh due to emission of low solar radiation. As regards to monthly variations  of ionospheric TEC, results of IGS and COD satellites show that highest mean TEC  value is recorded on March and July recorded the least peak TEC value. Results  regarding to seasonal variation also revealed that E-Season recorded maximum  TEC value and least TEC value is recorded on J-Season. The observations of the two satellites also show that the mean TEC value presents stronger solar activity sensitivity at lower-latitude bands than the middle and high latitudes. In general,  there was a very high correlation between Mean TEC value recorded by IGS and COD satellites by the year of 2008 in all low, middle and high latitudes. Keywords : IGS and COD satellites, GPS, Ionosphere, Low, middle and  high-latitudes, TEC.\",\"PeriodicalId\":18948,\"journal\":{\"name\":\"Momona Ethiopian Journal of Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2017-11-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.4314/mejs.v9i2.2\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Momona Ethiopian Journal of Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4314/mejs.v9i2.2\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MULTIDISCIPLINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Momona Ethiopian Journal of Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/mejs.v9i2.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 2

摘要

本文旨在研究IGS和COD两颗GPS卫星电离层总电子含量(TEC)的日变化、月变化和季节变化,并检验到2008年这两颗卫星的平均VTEC相关性。TEC由沿信号传输路径的1m 2列中的电子密度的积分来定义。它是监测可能的空间天气影响的一个重要参数。IGS和COD卫星的处理和存档数据已导入MATLAB代码,该代码为我们提供了VTEC值的结果。两颗卫星的结果显示,在选定的春分和至日中,由于到达地球电离层的最大太阳辐射,TEC的最大值于2008年3月20日在北赤道和西南赤道上空记录。相反,2008年6月21日,南亚,特别是斯里兰卡和孟加拉国,由于太阳辐射量低,记录到电离层TEC的最小峰值。关于电离层TEC的月变化,IGS和COD卫星的结果显示,3月的TEC平均值最高,7月的TEC峰值最低。关于季节变化的结果还表明,E季节记录的TEC值最大,J季节记录的TC值最小。两颗卫星的观测结果还表明,平均TEC值在低纬度波段比在中高纬度波段表现出更强的太阳活动敏感性。总的来说,截至2008年,IGS卫星记录的平均TEC值与COD卫星记录的所有低纬度、中纬度和高纬度地区的TEC值之间存在非常高的相关性。关键词:IGS和COD卫星,GPS,电离层,低、中、高纬度,TEC。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Global Variations of Ionospheric Total Electron Content (TEC) Derived from GPS Global Ionospheric Maps
This paper is aimed to investigate diurnal, monthly and seasonal variation of  ionospheric total electronic content (TEC) obtained from two GPS satellites IGS and COD and to inspect mean VTEC Correlation between the two satellites by the year  of 2008. TEC is defined by the integral of electron density in a 1 m 2 column along  the signal transmission path. It is an important parameter to monitor possible space weather impacts. The processed and archived data taken from IGS and COD  satellites has been imported in to a MATLAB code which gave us the results of the  value of VTEC. Results of the two satellites revealed that, Out of the selected  equinox and solstice day’s maximum value of TEC is recorded on March 20/2008  over North and South west equator due to the maximum solar radiation reaching to  the ionosphere of the Earth. On the contrary, the Minimum peak ionospheric TEC  value is recorded on June 21/2008 over south Asia particularly Srilanka and  Bangladesh due to emission of low solar radiation. As regards to monthly variations  of ionospheric TEC, results of IGS and COD satellites show that highest mean TEC  value is recorded on March and July recorded the least peak TEC value. Results  regarding to seasonal variation also revealed that E-Season recorded maximum  TEC value and least TEC value is recorded on J-Season. The observations of the two satellites also show that the mean TEC value presents stronger solar activity sensitivity at lower-latitude bands than the middle and high latitudes. In general,  there was a very high correlation between Mean TEC value recorded by IGS and COD satellites by the year of 2008 in all low, middle and high latitudes. Keywords : IGS and COD satellites, GPS, Ionosphere, Low, middle and  high-latitudes, TEC.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
0.00%
发文量
13
审稿时长
12 weeks
期刊最新文献
First occurrence of rudderfish Centrolophus niger (Gmelin, 1789) in the Edremit Bay (Northern Aegean Sea, Türkiye) with the maximum length record for Turkish Seas An Engineering Geological Appraisal of the Leakage Problem in Dora-1 Earthen Dam, Tigray: Implications for its Stability Nano-Zirconia Synthesis Methods and their Pioneering Applications in Dentistry Contribution of Participatory Forest Management Program in Non-Timber Forest Products to balance Livelihood Improvement and Conservation: a case of Sera Forest, Amigna District, Southern Ethiopia Effect of Polymerization Variables on the Electrical Conductivity of Polyaniline Functionalized Cotton Textiles
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1