At present the International GNSS Service (IGS) provides time-dependent vertical TEC (VTEC) maps based on more than 100 permanent ground stations; however, these stations are mainly located on the continents and provide less accurate results over the oceans. New space-based observation techniques, ...
(简称COSMIC TEC Maps).将COSMIC TEC地图和全球定位导航卫星系统服务组织(International GNSS Service,IGS)发布的全球电离层TEC地图(Global Ionospheric Maps,GIMs)以及OSTM/JASON-2卫星的高度计观测值进行比对,发现数据吻合度较好,证明利用COSMIC掩星资料构建全球电离层TEC地图具有可行性.随着新的掩星观测系统的即将问世,...
需要对它进行精确的估计和改正.讨论IGS精密星历和CODE全球总电子含量图(TEC MAPs)在GPS时间传递中的应用.计算结果表明,采用IGS产品可有效提高单站定时和远距离时间... 高玉平 - 《天文学报》 被引量: 67发表: 2004年 Preliminary results and analyses of using IGS GPS data to determine global ionospheric TEC...
第40卷 第2期2015年4月 全球定位系统GNSSWorldofChina Vol.40,No.2&April,2015doi:10.13442/j.gnss.1008‐9268.2015.02.014基于GPSTk的区域电离层TEC地图重构王志钢,欧明(中国电波传播研究所,山东青岛266107)摘要:电离层是影响卫星导航系统传输时延的重要因素之一,电离层总电子含量(TEC)地图重构是消除电离层传输时延...
As with all travel, I recommend confirming what it says in the app on Google Maps or in person at the station, but so far everything has been accurate for me! And it was easy to buy tickets on here, which I appreciated. 更多 impossiblewire , 2022/12/13 Extremely slow app ...
For a long-term prediction, the IRI-Plas and Ne Quick models are compared with the Global Ionospheric Maps(GIM) presented by the Jet Propulsion Laboratory(JPL) and the Technical University of Catalonia(UPC).For a short-term prediction, the Standard Persistence Model(SPM) method, a 27 day ...
A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysisA regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysisA technique is developed to derive two-dimensional maps of total electron...
Find out more Medical Devices Testing and Evaluation Centre Find out more Medical Devices Testing and Evaluation Centre Find out more Previous slide Next slide Technology Support Accelerating medical devices to market. MDTEC provides medical technology development support and dedicated testing. ...
Characteristic parameters such as velocity, wavelength and direction were estimated from the perturbation TEC maps. Showing a mean wavelength of 2000 km, a mean period of 59 min and a phase speed of 684 ms 1 in average, the perturbations are allocated to LSTID. The comparison to LSTID ...
Strong local long-living TEC deviations from the quiet non-disturbed conditions that (i.e. anomalies) linked to the near-epicenter region followed by the similar effects at the magnetically conjugated area are discriminated using differential TEC maps derived from the Global Ionospheric TEC Maps ...