Zobrazeno 1 - 10
of 355
pro vyhledávání: '"HF radio"'
Autor:
Veronika Barta, Tamás Bozóki, Dávid Péter Süle, Daniel Kouba, Jens Mielich, Tero Raita, Attila Buzás
Publikováno v:
Remote Sensing, Vol 16, Iss 21, p 3975 (2024)
A novel method was developed based on the amplitude data of the EM waves measured by Digisondes to calculate and investigate the relative ionospheric absorption changes. The effect of 13 solar flares (>C8) that occurred from 4 to 10 September 2017 we
Externí odkaz:
https://doaj.org/article/1c290ae9020c441295ead4a561411293
Publikováno v:
Solar-Terrestrial Physics, Vol 9, Iss 2, Pp 101-110 (2023)
We present the result of the studies into characteristics of high-latitude ionospheric F-region longitudinal plasma waves (Langmuir and ion-acoustic), caused by the impact of powerful HF radio waves of ordinary (O-mode) or extraordinary (X-mode) pola
Externí odkaz:
https://doaj.org/article/f827a9cea4a34e4899f33753d82da474
Publikováno v:
IACR Transactions on Symmetric Cryptology, Vol 2023, Iss 4 (2023)
HALFLOOP is a family of tweakable block ciphers that are used for encrypting automatic link establishment (ALE) messages in high frequency radio, a technology commonly used by the military, other government agencies and industries which require high
Externí odkaz:
https://doaj.org/article/6c5b32769ff94426a1fe9df13b51bf05
Autor:
Chernogor, Leonid F. a, b, c, Garmash, Kostyantyn P. b, Guo, Qiang c, Rozumenko, Victor T. b, Zheng, Yu a, ⁎
Publikováno v:
In Advances in Space Research 1 September 2023 72(5):1688-1702
Publikováno v:
Solar-Terrestrial Physics, Vol 9, Iss 1, Pp 21-30 (2023)
We present experimental results from the studies of large-scale inhomogeneities along the external magnetic field with increased electron density, electron temperature, and excitation of elongated plasma waves (Langmuir and ion-acoustic), induced by
Externí odkaz:
https://doaj.org/article/42e5a5fefb72468480f9d9dd0b881e48
Publikováno v:
Radio Physics and Radio Astronomy, Vol 27, Iss 4, Pp 249-267 (2022)
Subject and Purpose. The study of the effect that each new Solar eclipse (SE) has on radio wave characteristics is an actual scientific and technical issue. The purpose of the present work is to analyze the variations in Doppler spectra (DS), Doppler
Externí odkaz:
https://doaj.org/article/1e12da27be0644099e01f590766a5f3f
Akademický článek
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Autor:
Attila Buzás, Daniel Kouba, Jens Mielich, Dalia Burešová, Zbyšek Mošna, Petra Koucká Knížová, Veronika Barta
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
Increased solar radiation during solar flare events can cause additional ionization and enhanced absorption of the electromagnetic (EM) waves in the ionosphere leading to partial or even total radio fade-outs. In this study, the ionospheric response
Externí odkaz:
https://doaj.org/article/d01a8886e9b94d668ae3ab380bccfa7d
Publikováno v:
In Advances in Space Research 15 April 2022 69(8):2989-2999
Publikováno v:
In Atmospheric Research July 2021 256