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Unusual Enhancements of NmF2 in Anyang Ionosonde Data [PDF]
Journal of Astronomy and Space Sciences, 2013 Sudden enhancements of daytime NmF2 appeared in Anyang ionosonde data during summer seasons in 2006-2007. In order to investigate the causes of this unusual enhancement, we compared Anyang NmF2’s with the total electron contents (GPS TECs) observed at ...
Jong Yeon Yun, Yong Ha Kim
exaly +2 more sources
Performance Analysis of a Portable Low-Cost SDR-Based Ionosonde
Atmosphere, 2023 This work presents a software-defined radio ionosonde (ISDR) developed at the Abdus Salam International Centre for Theoretical Physics (Italy) and the Institute of Radio Astronomy (Ukraine) and installed at the Ukrainian Antarctic Station in 2017.
Oleksandr Koloskov
exaly +3 more sources
New Chung-Li Ionosonde in Taiwan: System Description and Preliminary Results
Remote Sensing, 2022 In spite of being interrupted several times in its long history of operation since 1950, the routine observation of the ionosphere with various ionosondes installed at the Chung-Li ionosphere station in Taiwan has been achieved successively for more than
Yen-Hsyang Chu +2 more
exaly +3 more sources
Frontiers in Astronomy and Space Sciences, 2023 The investigation of sporadic E or Es layers typically relies on ground-based or satellite data. This study compares the Es layers recorded in ionograms with those detected using GNSS L1 signal-to-noise ratio data from FORMOSAT-3/COSMIC radio occultation
Sahar Sobhkhiz-Miandehi, C Arras
exaly +3 more sources
Ionospheric drift measurements with ionosondes
Annals of Geophysics, 1998 In the last forty years many attempts have been made to measure ionospheric plasma motions with HF radio sounders, generally specialized ionosondes. Starting in the 1950's, the so-called similar fading and the correlation methods were applied to estimate
D. L. Haines +2 more
doaj +4 more sources
The Accuracy of Real-Time hmF2 Estimation from Ionosondes
Remote Sensing, 2020 A total of 4991 ionograms recorded from April 1997 to December 2017 by the Millstone Hill Digisonde (42.6°N, 288.5°E) were considered, with simultaneous Ne(h)[ISR] profiles recorded by the co-located Incoherent Scatter Radar (ISR).
Carlo Scotto, Dario Sabbagh
doaj +2 more sources
Design and Application of the Digital Multifunctional Ionosonde
IET Radar, Sonar and Navigation, 2016 A multifunctional ionosonde was designed for ionospheric scientific research and monitoring applications by the Ionospheric Laboratory of Wuhan University during 2012–2014. This ionosonde is a high‐frequency (HF) radar using inter‐pulse phase codes and linear frequency modulation with high sensitivity.
Xiao Cui
exaly +2 more sources
Heliyon, 2023 This study presents an evaluation of the performance of the International Reference Ionosphere Model augmented with the Plasmasphere (IRI Plas 2017) from the Addis Ababa Ionosonde Station, Ethiopia, for measuring ionospheric parameters at geographic (9 ...
Lake Endeshaw, Alene Seyoum
doaj +1 more source
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 +13 more
doaj +1 more source
A Regional Model of Topside Ionospheric Effective Scale Heights Derived From Ionosonde and GNSS TEC
Space Weather, 2023 Ionospheric scale height is critical for the structure of electron density profile in the ionosphere. However, mostly, the effective scale heights (fitted with mathematical functions) instead of topside ionospheric scale heights were used to reconstruct ...
Chunhua Jiang +6 more
doaj +1 more source