Anton Kashcheyev
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View article: Use of Low-Cost GNSS Receivers for Ionospheric Monitoring
Use of Low-Cost GNSS Receivers for Ionospheric Monitoring Open
Electromagnetic waves propagating through the Earth’s ionosphere are subjected to changes in group and phase velocities, refraction, dispersion, and diffraction. For systems relying on the usage of radio signals affected by the ionosphere,…
View article: On the Diurnal Variation of Doppler Frequency Shift of Trans-Ionospheric Radio Waves Within Equatorial Ionospheric Anomaly Region in Africa
On the Diurnal Variation of Doppler Frequency Shift of Trans-Ionospheric Radio Waves Within Equatorial Ionospheric Anomaly Region in Africa Open
This paper examined the diurnal variation of the doppler frequency shift (DFS) of a trans-ionospheric high frequency (HF) radio wave signal within the equatorial ionospheric anomaly region. Within the framework of the International Space W…
View article: Co‐Ordinated Observations of Multi‐Scale Irregularities Using ICEBEAR and GNSS During the May 2024 Superstorm
Co‐Ordinated Observations of Multi‐Scale Irregularities Using ICEBEAR and GNSS During the May 2024 Superstorm Open
We present observations of plasma structuring from three meters up to hundreds of kilometers at auroral latitudes during the extreme geomagnetic storm of May 2024 using co‐ordinated observations from ICEBEAR and Global Navigation Satellite…
View article: EclipseNB: A Network of Low‐Cost GNSS Receivers to Study the Ionosphere
EclipseNB: A Network of Low‐Cost GNSS Receivers to Study the Ionosphere Open
This work aims to demonstrate that dense networks of low‐cost dual‐frequency global navigation satellite systems (GNSS) receivers can be used to retrieve ionospheric electron content with almost the same level of accuracy as scientific‐gra…
View article: Westward PPEF Plays Important Role in the Suppression of Post‐Midnight Plasma Irregularities: A Case Study of the November 2021 Geomagnetic Storm
Westward PPEF Plays Important Role in the Suppression of Post‐Midnight Plasma Irregularities: A Case Study of the November 2021 Geomagnetic Storm Open
We use multiple instruments data to investigate the behavior of the equatorial and low‐latitude ionosphere during the geomagnetically active and quiet period of November 1–6, 2021. In this context, total electron content (TEC) data obtaine…
View article: Assessment of the performance of the TOPGNSS and ANN-MB antennas for ionospheric measurements using low-cost u-blox GNSS receivers
Assessment of the performance of the TOPGNSS and ANN-MB antennas for ionospheric measurements using low-cost u-blox GNSS receivers Open
Low-cost GNSS receivers have recently been gaining reliability as good candidates for ionospheric studies. In line with these gains are genuine concerns about improving the performance of these receivers. In this work, we present a compreh…
View article: Spectral Characteristics of Phase Fluctuations at High Latitude
Spectral Characteristics of Phase Fluctuations at High Latitude Open
It has long been established that ionospheric electron density irregularities cause random rapid amplitude and phase fluctuations in trans‐ionospheric radio signals. Various types of ground‐based measurements, including radar and Global Na…
View article: Radio Instrument Package for Lunar Ionospheric Observation: A Concept Study
Radio Instrument Package for Lunar Ionospheric Observation: A Concept Study Open
The lunar ionosphere is a ∼100 km thick layer of electrically charged plasma surrounding the moon. Despite knowledge of its existence for decades, the structure and dynamics of the lunar plasma remain a mystery due to lack of consistent ob…
View article: Longitudinal dependence of ionospheric irregularities to maximum ring current and PPEF sensed by GNSS and magnetometers during the storm of 4 November 2021
Longitudinal dependence of ionospheric irregularities to maximum ring current and PPEF sensed by GNSS and magnetometers during the storm of 4 November 2021 Open
We employ multi-instrumental data to investigate the behavior of equatorial and low latitude ionosphere during the geomagnetic storm of November 3-6, 2021. We used TEC data obtained from GPS receiver stations located in the equatorial and …
View article: Radio Instrument Package for Lunar Ionospheric Observation: A Concept Study
Radio Instrument Package for Lunar Ionospheric Observation: A Concept Study Open
The lunar ionosphere is a ~100 km thick layer of electrically charged plasma surrounding the moon. Despite knowledge of its existence for decades, the structure and dynamics of the lunar plasma remain a mystery due to lack of consistent ob…
View article: Performance Analysis of a Portable Low-Cost SDR-Based Ionosonde
Performance Analysis of a Portable Low-Cost SDR-Based Ionosonde Open
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 …
View article: Long-distance HF radio waves propagation during the April 2023 geomagnetic storm by measurements in Antarctica, in Europe, and aboard RV Noosfera
Long-distance HF radio waves propagation during the April 2023 geomagnetic storm by measurements in Antarctica, in Europe, and aboard RV Noosfera Open
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, …
View article: Performance analysis of a portable low-cost SDR-based ionosonde
Performance analysis of a portable low-cost SDR-based ionosonde Open
Dataset of raw ionograms with one hour periodicity recorded at the Ukrainian Antarctic Station "Akademik Vernadsky" from January 1, 2021 to December 31, 2021 by SDR-based ionosonde (file name template: YYYYMMDD_HHMM_iono.ion; example: 2021…
View article: Performance analysis of a portable low-cost SDR-based ionosonde
Performance analysis of a portable low-cost SDR-based ionosonde Open
Dataset of raw ionograms with one hour periodicity recorded at the Ukrainian Antarctic Station "Akademik Vernadsky" from January 1, 2021 to December 31, 2021 by SDR-based ionosonde (file name template: YYYYMMDD_HHMM_iono.ion; example: 2021…
View article: Case Studies on the Day‐to‐Day Variability in the Occurrence of Post‐Sunset Equatorial Spread F
Case Studies on the Day‐to‐Day Variability in the Occurrence of Post‐Sunset Equatorial Spread F Open
The occurrence of post‐sunset equatorial spread F (ESF) is well understood to be associated with the evening pre‐reversal enhancement (PRE). Earlier studies have shown that when large datasets are examined, there is a significant correlati…
View article: B2 Thickness Parameter Response to Equinoctial Geomagnetic Storms
B2 Thickness Parameter Response to Equinoctial Geomagnetic Storms Open
The thickness parameters that most empirical models use are generally defined by empirical relations related to ionogram characteristics. This is the case with the NeQuick model that uses an inflection point below the F2 layer peak to defi…
View article: Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: algorithms testing
Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: algorithms testing Open
Radio Occultation (RO) is a very powerful technique to probe a planetary atmosphere, in providing vertical density profiles of the neutral atmosphere and ionosphere. The standard method uses a radio link between a spacecraft and an Earth g…
View article: A Bayesian Inference‐Based Empirical Model for Scintillation Indices for High‐Latitude
A Bayesian Inference‐Based Empirical Model for Scintillation Indices for High‐Latitude Open
Solar wind parameters, the solar radio flux index (F10.7), the Sun's declination and the SuperMAG Electrojet index are used to construct a Bayesian inference‐based empirical model for scintillation indices ( S 4 and σ Φ ) at high latitudes…
View article: Daytime GNSS scintillation due to Es over Arabian Peninsula during low solar activity
Daytime GNSS scintillation due to Es over Arabian Peninsula during low solar activity Open
A constant presence of daytime GNSS phase (σϕ) and amplitude (S4) scintillation during the times sporadic-E (Es) was observed, is reported. The most favorable local time (LT) of the day for the occurrences are the morning (08:00 to 12:00) …
View article: Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: feasibility study and preparation for the data analysis
Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: feasibility study and preparation for the data analysis Open
Radio Occultation is a very powerful technique to probe a planetary atmosphere, in providing vertical density profiles of the neutral atmosphere and ionosphere. The standard method uses a radio link at S and/or X band between a spacecraft …