Results 11 to 20 of about 711 (146)

AMPLITUDE VARIATIONS OF THE REFLECTED SIGNAL DURING VERTICAL SOUNDING OF THE IONOSPHERE AT MIDDLE LATITUDES

Solar-Terrestrial Physics, 2020
In this paper, we discuss the main types of quasiperiodic variations in amplitudes of a reflected signal during vertical sounding of the ionosphere at middle latitudes.
K.М. Yusupov, J.D. Mathews, T. Maruyama, A.D. Akchurin, M.V. Tolstikov, O.N. Sherstyukov, E.A. Filippova, A.S. Safiullin   +7 more
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Global Monitoring of Ionospheric Weather by GIRO and GNSS Data Fusion

Atmosphere, 2022
Prompt and accurate imaging of the ionosphere is essential to space weather services, given a broad spectrum of applications that rely on ionospherically propagating radio signals.
Ivan Galkin, Adam Froń, Bodo Reinisch, Manuel Hernández-Pajares, Andrzej Krankowski, Bruno Nava, Dieter Bilitza, Kacper Kotulak, Paweł Flisek, Zishen Li, Ningbo Wang, David Roma Dollase, Alberto García-Rigo, Inez Batista   +13 more
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Ionosphere over Ukrainian Antarctic Akademik Vernadsky station under minima of solar and magnetic activities, and daily insolation: case study for June 2019

Український антарктичний журнал, 2020
We present ionospheric observational results obtained over Ukrainian Antarctic Akademik Vernadsky station. Ionospheric parameters (peak electron density and height, electron density and electron and ion temperatures in the topside) during the period near
O. V. Bogomaz, M. O. Shulha, D. V. Kotov, T. G. Zhivolup, A. V. Koloskov, A. V. Zalizovski, S. B. Kashcheyev, A. I. Reznychenko, M. R. Hairston, V. Truhlik   +9 more
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On the Ion Line Calibration by Plasma Line in ISR Measurements

Remote Sensing, 2023
The radar constant calibration in incoherent scatter radar ion line processing is essential for the data quality and was not paid enough attention in previous studies.
Xinan Yue, Fanyu Liu, Junyi Wang, Yonghui Wang, Yihui Cai, Feng Ding, Baiqi Ning, Mingyuan Li, Ning Zhang, Zhongqiu Wang, Su Xu   +10 more
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Long-distance HF radio waves propagation during the April 2023 geomagnetic storm by measurements in Antarctica, in Europe, and aboard RV Noosfera

Український антарктичний журнал, 2023
The paper aims at an experimental study of the mechanisms of long-distance high-frequency (HF) propagation and spatial and temporal variations of the ionospheric parameters during the first hours of a severe geomagnetic storm of April 23, 2023 by ...
A. Zalizovski, Y. Yampolski, I. Stanislawska, O. Koloskov, O. Budanov, O. Bogomaz, B. Gavrylyuk, A. Sopin, A. Reznychenko, A. Kashcheyev, S. Kashcheyev, V. Lisachenko   +11 more
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Thermospheric Parameters during Ionospheric G-Conditions

Remote Sensing, 2021
For the first time thermospheric parameters (neutral composition, exospheric temperature and vertical plasma drift related to thermospheric winds) have been inferred for ionospheric G-conditions observed with Millstone Hill ISR on 11–13 September 2005 ...
Loredana Perrone, Andrey V. Mikhailov, Dario Sabbagh   +2 more
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Ionospheric Density Irregularities, Turbulence, and Wave Disturbances During the Total Solar Eclipse Over North America on 21 August 2017

Geophysical Research Letters, 2018
Data from ionosonde and global positioning system (GPS) total electron content (TEC) observations reveal a number of ionospheric phenomena during the total solar eclipse on 21 August 2017 over North America. The eclipse started over the West Coast at ∼16:
Rezy Pradipta, Endawoke Yizengaw, Patricia Doherty   +2 more
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The Validation of FORMOSAT-3/COSMIC Measurements in the Middle Latitude Region of China with Ionosonde Observations during 2015–2018

Universe, 2022
We used ground-based ionosonde observations at Ganzi (31.2° N, 100.4° E) to validate the COSMIC measurement in the middle latitude region of China during low solar activity.
Liangchen Hu, Fanfan Su, Fuying Zhu, Xinxing Li   +3 more
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Experimental Observation and Analysis of Ionosphere Echoes in the Mid-Latitude Region of China Using High-Frequency Surface Wave Radar and Ionosonde

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Ionospheric clutter is a major factor affecting the performance of high-frequency surface wave radar (HFSWR). Previous studies have been mainly focused on the development of ionospheric clutter suppression methods involving delicate signal processing ...
Xuguang Yang, Mingjie Wang, Weimin Huang, Changjun Yu   +3 more
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A Comparative Study on Radio Frequency Interference Suppression and foF2 Scaling for Ionograms

Remote Sensing, 2023
In this paper, we compare the performances of radio frequency interference (RFI) suppression between radio frequency interference mitigation (RFIM) and frequency-domain adaptive clutter suppression (FACS) algorithms that apply to ionograms for foF2 ...
Zhao-Yu Chen, Kai-Jun Ke, Ching-Lun Su, Hung-Shi Lin, Yu-Lei Lai, Yen Lin, Yen-Hsyang Chu   +6 more
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