区域和全球技术价值的比较:土耳其模式

IF 3.1 Q2 ENGINEERING, GEOLOGICAL International Journal of Engineering and Geosciences Pub Date : 2018-06-01 DOI:10.26833/ijeg.382604
F. Basciftci, C. Inal, O. Yildirim, Sercan Bülbül
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引用次数: 10

摘要

电离层是地球上方60公里至1100公里的大气层,由太阳射线和电离气体组成。电离层是影响全球导航卫星系统(GNSS)测量的一个重要层。全球导航卫星系统测量的质量与电离层的变化直接相关。因此,监测电离层的变化非常重要。表示电离层特征的重要参数之一是总电子含量(TEC),它是电子密度随太阳辐射变化的函数。在本研究中,选取了68个站点进行评估,其中包括56个TUSAGA Active(CORS-TR)站点和IGS站点。评估阶段采用了瑞士伯尔尼大学开发的Bernese v5.2 GNSS软件。从2009年到2015年,TEC值每隔两小时计算一次,每月计算一天。在使用单层模型的研究中,将从全球导航卫星系统测量中获得的TEC值与从全球电离层图(GIM-TEC)和欧洲轨道确定中心(CODE)、欧洲航天局(ESA)和喷气推进实验室(JPL)发布的国际电离层参考模型方案中获得的TC值(IRI-2012 TEC)进行了比较。
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COMPARISON OF REGIONAL AND GLOBAL TEC VALUES: TURKEY MODEL
The ionosphere is a layer of atmosphere 60 km to 1,100 km above the earth and is composed of solar rays and ionized gases. The ionosphere is an important layer affecting Global Navigation Satellite System (GNSS) measures. The quality of GNSS measures is directly related to the changes in the ionosphere. For this reason, monitoring changes in the ionosphere is quite important. One of the important parameters expressing the characteristic of the ionosphere is the Total Electron Content (TEC), which is a function of electron density exhibiting transformation with solar radiation. In this study, 68 stations including 56 TUSAGA-Active (CORS-TR) stations and also IGS stations were taken for evaluation. Bernese v5.2 GNSS software developed by Bern University of Switzerland was employed at the evaluation stage. From 2009 until 2015, TEC values were calculated at two hourly intervals, one day for each month. In the study, where a Single Layer Model was used, TEC values obtained from GNSS measurements have been compared with the TEC (IRI-2012 TEC) values obtained from the global ionosphere map (GIM-TEC) and the international ionosphere reference model programme published by the Centre for Orbit Determination in Europe (CODE), the European Space Agency (ESA), and the Jet Propulsion Laboratory (JPL).
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来源期刊
CiteScore
4.00
自引率
0.00%
发文量
12
审稿时长
30 weeks
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