A5065741527- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Atmospheric Ozone and Climate
- Methane Hydrates and Related Phenomena
- Electrostatic Discharge in Electronics
- Underwater Vehicles and Communication Systems
- Radiation Effects in Electronics
- Advancements in PLL and VCO Technologies
- Radio Wave Propagation Studies
- Underwater Acoustics Research
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- earthquake and tectonic studies
- Spaceflight effects on biology
- Automated Road and Building Extraction
- Spacecraft and Cryogenic Technologies
- Seismic Waves and Analysis
- Geochemistry and Geologic Mapping
- Scientific Research and Discoveries
- Particle accelerators and beam dynamics
- Geophysics and Sensor Technology
Institute of Radio Astronomy
2014-2025
National Academy of Sciences of Ukraine
2015-2025
Centrum Badań Kosmicznych
2019-2024
Polish Academy of Sciences
2020-2024
State Institution National Antarctic Scientific Center
2019-2024
Ministry of Education and Science
2020-2024
University of Colorado Boulder
2022
This paper presents a review on the PECASUS service, which provides advisories enhanced space weather activity for civil aviation. The are tailored according to Standards and Recommended Practices of International Civil Aviation Organization (ICAO). Advisories disseminated in three impact areas: radiation levels at flight altitudes, GNSS-based navigation positioning, HF communication. review, is based experiences authors from two years running pilot ICAO services, describes empirical models...
Abstract. The Weddell Sea Anomaly (WSA), a summer ionospheric anomaly over the eastern Antarctic Peninsula, was first observed in 1958 and is characterized by nighttime peak electron concentration, unlike typical daytime peak. There are some works that examine long-term trends at stations WSA region but they do not seasonal-diurnal analysis vital for differentiating periods of anomaly. This study investigates variation trend F2 layer critical frequency (foF2) located within region: Vernadsky...
The behavior of the Earth’s middle atmosphere and ionosphere is governed by multiple processes resulting not only from downward energy transfer Sun magnetosphere but also upward terrestrial weather. Understanding relative importance mechanisms beyond solar geomagnetic activity essential for progress in multi-day predictions atmosphere-ionosphere system. recent development research infrastructure, particularly Antarctica, allows observation new ionospheric features. Here we show first time...
Космічне приладобудування ВВЕДЕНИЕ Проблема исследования ионосферы возникла в начале 20-го века с момента предсказания A. Хэвисайдом и O. Кеннели формирования ионизированного слоя на высотах больше 100 км верхней атмосфере.Впервые экспериментально ее существование 1926 г. подтвердил профессор Э. Апплетон.По существу это были первые мире радиолокационные эксперименты.В этом же году Г
This work presents a software-defined radio ionosonde (ISDR) developed at the Abdus Salam International Centre for Theoretical Physics (Italy) and Institute of Radio Astronomy (Ukraine) installed Ukrainian Antarctic Station in 2017. For first time, results long-term data comparison ISDR with conventional IPS-42 produced by KEL Aerospace are presented discussed. The matching ionograms obtained during whole year 2021, as well critical frequencies virtual heights F, E, Es layers manually scaled...
Abstract A study is presented of artificial ionospheric turbulence (AIT) induced by HF heating at High Frequency Active Auroral Research Program (HAARP) using frequencies close to the fourth electron gyroharmonic, in a broad range radiated powers and number different diagnostics. The diagnostics include GPS scintillations, ground‐based stimulated electromagnetic emission (SEE), HAARP ionosonde, Kodiak radar, signals received Ukrainian Antarctic Station (UAS). latter allowed analysis waves...
In this paper, we present quiet-time (18 September and 19 December 2018) behavior of the midlatitude ionosphere over Eastern Europe. We used data obtained from incoherent scatter (IS) radar, ionosonde coherent Doppler HF sounding system to detect investigate traveling ionospheric disturbances (TIDs). The dominant periods horizontal phase velocities registered TIDs are 45 – 80 min 230 460 m s−1, respectively. strongest signatures were observed in solstice measurement represented by large...
A new super-long-range wave propagation technique was implemented at different HF heating facilities. The waves radiated by a powerful heater were scattered into the ionospheric waveguide stimulated field aligned striations. This is formed in valley region between E- and F- layers of ionosphere. trapping channeling provide signals detected Ukrainian Antarctic "Academik Vernadsky" Station (UAS) which many thousand kilometers away from corresponding facility. It objectives this paper to study...
Abstract. Experimental results from the Tromsø and Sura heating experiments at high mid-latitudes are examined. It is shown that combination of HF-induced target bi-static HF Doppler radio scatter observations a profitable method for probing medium-scale traveling ionospheric disturbances (TIDs) mid-latitudes. modification provide way producing in controlled manner altitudes where sensitivity to TIDs highest. Bi-static were carried out on London-Tromsø-St. Petersburg path course experiment...
An analysis is presented of high‐frequency (HF) signals from the European Incoherent Scatter HF ionospheric modification transmitter received during 26–30 October 2002 at three sites, two in Europe and one Antarctica. Two components with different characteristics (“mirror‐reflected” “scattered”) were observed signal spectra. The mirror‐reflected component can be associated radiation through side lobes transmitting antenna thus bypassing modified volume on its way to receiving sites. In...
A network of HF receivers intended for multi-position monitoring the ionosphere is described. At present, it includes nine observation sites located at high, middle and low latitudes in both hemispheres Earth. The basic element a small-size receiving measuring units designed Institute Radio Astronomy (IRA) National Academy Sciences Ukraine (NASU) on basis personal computer equipped with commercial digital modules. Software packages developed by authors make possible to remotely control...
The background seasonal and diurnal variations of characteristics HF radio signals in frequency time domains propagated at the long paths are studied. transmitted bу RWM (frequencies 4996, 9996, аnd 14996 kHz) CHU 3330, 7850 service stations were received Ukrainian Antarctic Station (UAS) Akademik Vernadsky Мау 2010 -April 2011. Average monthly spectrograms presented апd analyzed. Pulse selection allowed detecting three different pathways: direct reverse paths, lying оn great circle,...
Abstract Records of the weather conditions, total ozone content (TOC) and ionospheric parameters measured at Antarctic Base 'Akademik Vernadsky' (Argentine Islands Archipelago) during 1995–2004 are analysed in this paper. The region above hole is found to be characterized by an increased level disturbance atmospheric fronts, geometry shown dependent on cyclonic activity. results discussed with reference a model internal wave propagation through non-isothermal atmosphere. Acknowledgements...
The paper aims at providing the technical information about Doppler vertical sounding of ionosphere that started Ukrainian Antarctic Akademik Vernadsky station since 2017; developing technique for processing and visualization data in form height-time diagrams median values ionospheric parameters; demonstrating capabilities this using results obtained during first year observations, namely background variations parameters as well examples observations travelling disturbances (TID). methods...
We present ionospheric observational results obtained over Ukrainian Antarctic Akademik Vernadsky station. Ionospheric parameters (peak electron density and height, ion temperatures in the topside) during period near local winter solstice Southern Hemisphere (June 28—29, 2019) are considered. The main objective is to show distinctive features of variations a prolonged with very low solar magnetic activities, minimal daily insolation. Methods. F2 layer peak height were calculated from...
Abstract A statistical picture of the occurrence and characteristics Traveling Ionospheric Disturbances (TIDs) over Antarctic Peninsula is established using Global Navigation Satellite System Total Electron Content High Frequency sounding observations. The measured parameters majority disturbances allow classifying them as medium scale TIDs (MSTIDs). Overall, observed climatology ionospheric in region varies significantly with season makes it possible to differentiate two major types...
Abstract This paper describes a system for multi‐position Doppler ionosphere sounding implemented at the beginning of 2018 in Kharkiv region Ukraine, data processing technique and initial results analysis. The comprises high frequency (HF) transmitter three receiving sites making almost right triangle with catheti 32.8 58 km. continuously emitting monochromatic signal ∼20 W power most cases slightly lower than foF2 is located city Kharkiv. value was permanently controlled by ionosonde...