Zobrazeno 1 - 10
of 227
pro vyhledávání: '"Sudden ionospheric disturbance"'
Publikováno v:
Al-Mustansiriyah Journal of Science, Vol 32, Iss 2, Pp 58-62 (2021)
A receiver station was installed at Nasiriyah (Dhi Qar University - Faculty of Sciences) to receive very low frequency (VLF) radio signals from transmitters around the world. VLF waves are excellent probes of the sudden ionospheric disturbance (SID);
Externí odkaz:
https://doaj.org/article/e5cf31a74317409a876c1bc53a6c1c56
Publikováno v:
Mustansiriyah Journal of Science, Vol 32, Iss 2, Pp 58-62 (2021)
A receiver station was installed at Nasiriyah (Dhi Qar University - Faculty of Sciences) to receive very low frequency (VLF) radio signals from transmitters around the world. VLF waves are excellent probes of the sudden ionospheric disturbance (SID);
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82e3bc2b71f14d3b27c7a31220ff56fd
http://mjs.uomustansiriyah.edu.iq/ojs1/index.php/MJS/article/view/984
http://mjs.uomustansiriyah.edu.iq/ojs1/index.php/MJS/article/view/984
Publikováno v:
Geodetski Glasnik, Iss 46, Pp 111-131 (2015)
Due to its dispersive nature, ionosphere causes a group delay or phase acceleration of the signals from Global navigation satellite systems - GNSS. Despite the progress of GNSS positioning methods, the ionospheric refraction is still one of the great
Externí odkaz:
https://doaj.org/article/41a31cb23d2140cea30e7669322da403
Autor:
Nielsen, Angelica S.
Military operations depend on high frequency (HF) radio communication. During a solar x-ray flare, the D-region of the ionosphere absorbs the HF radio wave energy, attenuating the signal, causing critical communication lines to fail. This research ev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2778::e11274dc300845633bbaae1dbd1c71ff
https://hdl.handle.net/10945/69693
https://hdl.handle.net/10945/69693
Publikováno v:
Space Weather. 17:339-356
Precision and safety of life applications of Global Navigation Satellite Systems require key information on space weather conditions in particular on the perturbation degree of the ionosphere. Such systems are particularly vulnerable against severe s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b257c9f1e69da11cb8f3d075ecb659e
https://doi.org/10.1029/2018sw002119
https://doi.org/10.1029/2018sw002119
Autor:
Tomoko Kawate, Shinsuke Imada, Shohei Nishimoto, Takuya Tsugawa, Yuichi Otsuka, Atsuki Shinbori, Toshiki Kawai, Michi Nishioka, Kyoko Watanabe, Hidekatsu Jin
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)
We attempted to reproduce the total electron content (TEC) variation in the Earth's atmosphere from the temporal variation of the solar flare spectrum of the X9.3 flare on September 6, 2017. The flare spectrum from the Flare Irradiance Spectral Model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c0121d773fda4409caefe03536e74d3
https://doi.org/10.1186/s40623-021-01376-6
https://doi.org/10.1186/s40623-021-01376-6
Publikováno v:
2020 8th International Conference on Cyber and IT Service Management (CITSM).
Space studying has become one of the most informative and popular areas of the new era. Monitoring the space and studying its phenomena was started a long way back. To make the study cheaper and more portable, the Stanford SOLAR Center first presente
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f64d9568f67cdf027ea8b88f33654127
https://doi.org/10.1109/citsm50537.2020.9268882
https://doi.org/10.1109/citsm50537.2020.9268882
Publikováno v:
Annals of Geophysics. 63
The signal amplitude of 22.1 kHz Very Low Frequency (VLF) waves, transmitted from the radio station Skelton, UK (GQD at 54.7 0 N, 2.8 0 W) and received at South France station (SID, Sudden Ionospheric Disturbance monitoring station at 46 0 N, 2 0 E)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::840dfc9c13f604ffed0d57e0a5dab942
https://doi.org/10.4401/ag-8127
https://doi.org/10.4401/ag-8127
Autor:
K.G. Ratovsky, Alexander Potapov, T. N. Polyushkina, A.A. Mylnikova, A.Yu. Pashinin, B. Tsegmed, A. V. Oinats, I. K. Edemskiy
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 164:229-234
Knowledge of the ionospheric state allows us to adjust the forecasts of radio wave propagation, specify the environment models, and follow the changes of space weather. At present, probing of the ionosphere is produced by radio sounding with ground i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca3caa7f0c408c13aa203c197132afc6
https://doi.org/10.1016/j.jastp.2017.08.026
https://doi.org/10.1016/j.jastp.2017.08.026
Autor:
Renato Filjar, Mia Filić
Publikováno v:
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC).
Space weather, geomagnetic and ionospheric conditions are the most prominent single cause of the Global Navigation Satellite System (GNSS) positioning performance degradation, through introduction of the GNSS signal ionospheric delay. This affects nu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7466d9a286a1c7bda37e62c16d2319c6
https://doi.org/10.23919/ursiap-rasc.2019.8738664
https://doi.org/10.23919/ursiap-rasc.2019.8738664