Results 1 to 10 of about 5,388 (217)
Performance evaluation of IRI-Plas 2017 model with ionosonde data measurements of ionospheric parameters [PDF]
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 +3 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 +5 more
exaly +4 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
S. Sobhkhiz-Miandehi +6 more
exaly +4 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 +4 more sources
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 ...
Yongha Kim, Young-Sil Kwak
exaly +2 more sources
Calibrating an Ionosonde for Ionospheric Attenuation Measurements. [PDF]
Sensors (Basel), 2018 Vertical ionospheric soundings have been performed at almost all ionospheric observatories with little attention to measuring the attenuation of the signal between transmission and reception. When the absorption has been determined, this has been achieved by comparing the received power after the first and second reflections, but this method has some ...
Gilli L, Sciacca U, Zuccheretti E.
europepmc +5 more sources
Implementation of an Electronic Ionosonde to Monitor the Earth’s Ionosphere via a Projected Column through USRP [PDF]
Sensors, 2017 This document illustrates the processes carried out for the construction of an ionospheric sensor or ionosonde, from a universal software radio peripheral (USRP), and its programming using GNU-Radio and MATLAB. The development involved the in-depth study
Jhon Jairo Barona Mendoza +2 more
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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.
Wanlin Gong, Xiao Cui, Lingyun Pan
exaly +2 more sources
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