Results 1 to 10 of about 89,788 (206)

Ground-Based GNSS and Satellite Observations of Auroral Ionospheric Irregularities during Geomagnetic Disturbances in August 2018 [PDF]

Sensors, 2021
The 25–26 August 2018 space weather event occurred during the solar minimum period and surprisingly became the third largest geomagnetic storm of the entire 24th solar cycle.
Irina Zakharenkova, Iurii Cherniak, Andrzej Krankowski   +2 more
doaj   +2 more sources

Characterization of multi-scale ionospheric irregularities using ground-based and space-based GNSS observations

Satellite Navigation, 2021
Ionospheric irregularities can adversely affect the performance of Global Navigation Satellite System (GNSS). However, this opens the possibility of using GNSS as an effective ionospheric remote sensing tool.
Yuxiang Peng, Michael Hartinger, Zhonghua Xu   +2 more
exaly   +2 more sources

Investigation of the Occurrence of Nighttime Topside Ionospheric Irregularities in Low-Latitude and Equatorial Regions Using CYGNSS Satellites [PDF]

Sensors, 2020
By using multi-satellite observations of the L1 signal-to-noise ratio (SNR) from the Cyclone Global Navigation Satellite System (CYGNSS) taken in 2017, we present the occurrence of nighttime topside ionospheric irregularities in low-latitude and ...
Liang Huang, Yi Liu, Qiong Tang, Guanyi Chen, Zhuangkai Wang, Chen Zhou   +5 more
doaj   +2 more sources

Investigating the Impacts of Ionospheric Irregularities on Precise Point Positioning Over China and Its Mechanism

Space Weather, 2022
The impacts of ionospheric irregularities on precise point positioning (PPP) have been commonly noticed in the field of the ionosphere and the precise application of the Global Navigation Satellite System.
Na Cheng, Zhou Weili, Shuli Song
exaly   +2 more sources

Numerical simulation of the propagation of electromagnetic waves in ionospheric irregularities

Earth and Planetary Physics, 2020
The characteristics of high-frequency (HF) electromagnetic (EM) wave propagation can be affected when EM waves propagate in the ionosphere. When ionospheric irregularities appear in the ionosphere, they can have a serious impact on the propagation of HF ...
Lehui Wei, Chunhua Jiang, Guobin Yang
exaly   +3 more sources

IGS ROTI Maps: Current Status and Its Extension towards Equatorial Region and Southern Hemisphere [PDF]

Sensors, 2022
The International GNSS Service (IGS) diurnal ROTI maps ionospheric product was developed to characterize ionospheric irregularities occurrence over the Northern hemisphere and has been available for the community since 2014.
Iurii Cherniak, Irina Zakharenkova, Andrzej Krankowski   +2 more
doaj   +2 more sources

Nighttime ionospheric irregularity during intense geomagnetic storm events over the Europe-African longitudinal sector [PDF]

Heliyon
Radio communication and navigation systems can be severely impacted by irregularities in the ionosphere. There is still much to learn about how geomagnetic storms affect the occurrence of these irregularities.
Yibekal Kassa, Ambelu Tebabal, Baylie Damtie   +2 more
doaj   +2 more sources

Relationship between geomagnetic storms and occurrence of ionospheric irregularities in the west sector of Africa during the peak of the 24th solar cycle

Frontiers in Astronomy and Space Sciences, 2022
The study of ionospheric irregularities is important since many technological systems might be influenced by the ionosphere. In this work, we use data from the Global Navigation Satellite Systems (GNSS) receiver installed in Abuja, Nigeria, GPS ...
George Ochieng Ondede, George Ochieng Ondede, A. B. Rabiu, A. B. Rabiu, Daniel Okoh, Daniel Okoh, Paul Baki, Joseph Olwendo, Kazuo Shiokawa, Yuichi Otsuka   +9 more
doaj   +1 more source

The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods

Space Weather, 2021
We present a study on the relationship between upward propagating gravity waves and ionospheric irregularities. Gravity waves (GWs) are identified from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite temperature measurements ...
Ephrem B. Seba, Melessew Nigussie, Nigussie M. Giday, Mark B. Moldwin   +3 more
doaj   +1 more source

Leveraging the CYGNSS Spaceborne GNSS‐R Observations to Detect Ionospheric Irregularities Over the Oceans: Method and Verification

Space Weather, 2022
The Global Navigation Satellite System (GNSS) has significantly facilitated the detection of ionospheric irregularities. Nevertheless, the ground‐based GNSS stations are inhomogeneously distributed around the world with large gaps, especially in the vast
Xiaodong Ren, Hang Liu, Dengkui Mei, Pengxin Yang, Zhiyu Zhang, Mohamed Freeshah, Xiaohong Zhang   +6 more
doaj   +1 more source