Results 1 to 10 of about 711 (146)

Performance evaluation of IRI-Plas 2017 model with ionosonde data measurements of ionospheric parameters [PDF]

open access: yesHeliyon, 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   +2 more sources

Implementation of an Electronic Ionosonde to Monitor the Earth’s Ionosphere via a Projected Column through USRP [PDF]

open access: yesSensors, 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
doaj   +2 more sources

Calibrating an Ionosonde for Ionospheric Attenuation Measurements. [PDF]

open access: yesSensors (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

The new AIS-INGV digital ionosonde

open access: yesAnnals of Geophysics, 2003
A new digital ionosonde called AIS-INGV (Advanced Ionospheric Sounder) was designed both for research and for routine service of HF radio wave propagation forecast.
J. A. Baskaradas   +4 more
doaj   +4 more sources

Unusual Enhancements of NmF2 in Anyang Ionosonde Data [PDF]

open access: yesJournal 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 ...
Jongyeon Yun   +4 more
doaj   +1 more source

The Comparison of Electron Density between CSES In Situ and Ground-Based Observations in China

open access: yesRemote Sensing, 2022
As the observation accuracy of parameters in the ionosphere cannot be directly checked, the comparison with other observations is the main way to evaluate the data quality of satellite measurements.
Jing Liu   +3 more
doaj   +1 more source

A Regional Model of Topside Ionospheric Effective Scale Heights Derived From Ionosonde and GNSS TEC

open access: yesSpace 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

Performance Analysis of a Portable Low-Cost SDR-Based Ionosonde

open access: yesAtmosphere, 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
doaj   +1 more source

New Chung-Li Ionosonde in Taiwan: System Description and Preliminary Results

open access: yesRemote 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
Kai-Jun Ke   +7 more
doaj   +1 more source

Climatology of Spread F over Tucumán from Massive Statistical Analysis of Autoscaled Data

open access: yesAtmosphere, 2021
Automatic ionogram interpretation methods developed for real-time ionospheric monitoring can be applied in retrospective studies to analyze large quantities of data. The Autoscala software, implemented for such a purpose, includes a routine for automatic
Carlo Scotto, Dario Sabbagh
doaj   +1 more source

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