Letteratura scientifica selezionata sul tema "Ionospheric radio wave propagation"
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Articoli di riviste sul tema "Ionospheric radio wave propagation"
Li, Qingfeng, Zeyun Li e Hanxian Fang. "Using 3D Ray Tracing Technology to Study the Disturbance Effect of Rocket Plume on Ionosphere". Atmosphere 13, n. 7 (20 luglio 2022): 1150. http://dx.doi.org/10.3390/atmos13071150.
Testo completoYang, Li-Xia, Chao Liu, Qing-Liang Li e Yu-Bo Yan. "Electromagnetic wave propagation characteristics of oblique incidence nonlinear ionospheric Langmuir disturbance". Acta Physica Sinica 71, n. 6 (2022): 064101. http://dx.doi.org/10.7498/aps.71.20211204.
Testo completoLaBelle, J. "High-latitude propagation studies using a meridional chain of LF/MF/HF receivers". Annales Geophysicae 22, n. 5 (8 aprile 2004): 1705–18. http://dx.doi.org/10.5194/angeo-22-1705-2004.
Testo completoPavelyev, A. G., Y. A. Liou, K. Zhang, C. S. Wang, J. Wickert, T. Schmidt, V. N. Gubenko, A. A. Pavelyev e Y. Kuleshov. "Identification and localization of layers in the ionosphere using the eikonal and amplitude of radio occultation signals". Atmospheric Measurement Techniques 5, n. 1 (4 gennaio 2012): 1–16. http://dx.doi.org/10.5194/amt-5-1-2012.
Testo completoLeyser, Thomas B., H. Gordon James, Björn Gustavsson e Michael T. Rietveld. "Evidence of <i>L</i>-mode electromagnetic wave pumping of ionospheric plasma near geomagnetic zenith". Annales Geophysicae 36, n. 1 (21 febbraio 2018): 243–51. http://dx.doi.org/10.5194/angeo-36-243-2018.
Testo completoMabie, Justin, e Terence Bullett. "Multiple Cusp Signatures in Ionograms Associated with Rocket-Induced Infrasonic Waves". Atmosphere 13, n. 6 (12 giugno 2022): 958. http://dx.doi.org/10.3390/atmos13060958.
Testo completoDanskin, D. W., A. V. Koustov, T. Ogawa, N. Nishitani, S. Nozawa, S. E. Milan, M. Lester e D. Andre. "On the factors controlling occurrence of F-region coherent echoes". Annales Geophysicae 20, n. 9 (30 settembre 2002): 1385–97. http://dx.doi.org/10.5194/angeo-20-1385-2002.
Testo completoWaters, C. L., T. K. Yeoman, M. D. Sciffer, P. Ponomarenko e D. M. Wright. "Modulation of radio frequency signals by ULF waves". Annales Geophysicae 25, n. 5 (4 giugno 2007): 1113–24. http://dx.doi.org/10.5194/angeo-25-1113-2007.
Testo completoKouris, S. S., P. A. Bradley e P. Dominici. "<i>Letter to the Editor:</i> Solar-cycle variation of the daily <i>fo</i>F2 and M(3000)F2". Annales Geophysicae 16, n. 8 (31 agosto 1998): 1039–42. http://dx.doi.org/10.1007/s00585-998-1039-0.
Testo completoHusin, Asnawi, e Buldan Muslim. "EFEK GELOMBANG TSUNAMI ACEH 2004 PADA GANGGUAN IONOSFER BERGERAK SKALA MENENGAH DARI PENGAMATAN JARINGAN GPS SUMATRA". Komunikasi Fisika Indonesia 16, n. 2 (31 ottobre 2019): 130. http://dx.doi.org/10.31258/jkfi.16.2.130-137.
Testo completoTesi sul tema "Ionospheric radio wave propagation"
Tshisaphungo, Mpho. "Validation of high frequency propagation prediction models over Africa". Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1015239.
Testo completoMercer, Christopher Crossley. "The search for an ionospheric model suitable for real-time applications in HF radio communications". Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1005274.
Testo completoDe, Larquier Sebastien. "The mid-latitude ionosphere under quiet geomagnetic conditions: propagation analysis of SuperDARN radar observations from large ionospheric perturbations". Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/24770.
Testo completoPh. D.
Löfås, Henrik. "Ionospheric modification by powerful HF-waves : Underdense F-region heating by X-Mode". Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121898.
Testo completoBotai, Ondego Joel. "Ionospheric total electron content variability and its influence in radio astronomy". Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1005258.
Testo completoOronsaye, Samuel Iyen Jeffrey. "Updating the ionospheric propagation factor, M(3000)F2, global model using the neural network technique and relevant geophysical input parameters". Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001609.
Testo completoHabarulema, John Bosco. "A contribution to TEC modelling over Southern Africa using GPS data". Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1005241.
Testo completoNordblad, Erik. "Opening New Radio Windows and Bending Twisted Beams". Doctoral thesis, Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158797.
Testo completoOpperman, B. D. L. "Reconstructing ionospheric TEC over South Africa using signals from a regional GPS network". Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1005273.
Testo completoBergadà, Caramés Pau. "Oblique Sounding and HF Communication Techniques for Very Long Haul Ionospheric Links". Doctoral thesis, Universitat Ramon Llull, 2015. http://hdl.handle.net/10803/285837.
Testo completoLos sistemas de radio de alta frecuencia (HF, en inglés) son usados por agencias gubernamentales y no gubernamentales en todo el mundo siempre que se necesite una alternativa a las comunicaciones por satélite: barcos en alta mar, aviones fuera del rango de cobertura de las redes radio de visión directa, operaciones militares, zonas donde la infraestructura ha sido destruida por algún desastre. Ésta ofrece una alternativa, o representa un sistema de backup, a las comunicaciones vía satélite, evitando los costes, la vulnerabilidad y los problemas de soberanía de las comunicaciones por satélite. En esta tesis se ha estudiado el enlace HF entre la base antártica española Juan Carlos I en la isla Livingston, en las Shetland del sur y España. El objetivo de este trabajo es el estudio de las limitaciones de la propagación ionosférica (como la relación señal a ruido e interferencia, la dispersión multicamino y la dispersión por efecto Doppler) y el diseño de la capa física de un enlace HF de baja velocidad, baja potencia y largo alcance. Se han estudiado un par de propuestas para este enlace, como son el espectro ensanchado por secuencia directa (DSSS, en inglés) y la multiplexación por división en frecuencia ortogonal (OFDM, en inglés). El reto ha sido definir las características que mejor se adecuan a este enlace para poder aprovechar la diversidad temporal y frecuencial que ofrece el canal HF. Desde el año 2003 diversas campañas de sondeo han permitido estudiar el canal HF pero no es hasta la campaña 2009/2010 que se consigue una fotografía de la actividad ionosférica tanto nocturna como diurna. En los artículos que se presentan en esta tesis hemos extendido los estudios previos a todo el rango de frecuencias HF y hemos mostrado las diferencias entre el día y la noche. Hemos usado estos resultados de caracterización del canal para diseñar y comparar símbolos DSSS y símbolos OFDM. Ambas posibilidades han resultado ser posibles candidatas para implementar un enlace HF de baja velocidad entre la Antártida y España. Sin embargo ambas técnicas representan dos aproximaciones distintas a la implementación del módem. Mientras que DSSS consigue un buen funcionamiento a baja velocidad en escenarios con baja relación señal a ruido, OFDM consigue tasas de transmisión más altas en escenarios más benignos.
High Frequency (HF) radio is used by governmental and non nongovernmental agencies worldwide whenever an alternative to satellites for sky wave communication is needed: ships at sea, aircraft out of range of line-of-sight radio networks, military operations, disaster areas with communication infrastructure destroyed or distant regions lacking other communications. It offers an alternative to satellites, or a backup, for long-haul communications, thus avoiding the costs, vulnerabilities and sovereignty concerns of satellite communications. In this thesis the HF link between the Antarctic Spanish Station Juan Carlos I in Livingston Island, South Shetlands and Spain is studied. The aim of this study is to address the impairments that affect HF propagation (i.e., signal-to-noise plus interference ratio, multipath and Doppler shift and spread) and to design the physical layer of a low rate, low power and long-haul HF link. Some proposals regarding this last issue are addressed, i.e., direct sequence spread spectrum (DSSS) and orthogonal frequency division multiplexing (OFDM). The challenge is to define the symbol characteristics that best fit the link to benefit from time and frequency diversity that offers the HF channel. Since 2003 several transmission campaigns have allowed to study the HF channel but it is not until the 2009/2010 campaign that we have achieved a whole picture of both diurnal and nocturnal ionospheric activity. In the papers presented in this thesis we have extended the previous research to the whole range of HF frequencies and we have shown the differences on performance between day and night. We have used the results from channel characterization to design and compare the performance of DSSS and OFDM symbols. Both techniques have turned out to be possible candidates to implement a low rate HF link between Antarctica and Spain. However, both techniques stand for different approaches of the modem: DSSS achieves good performance at low data rate in low SNR scenarios, whereas OFDM achieves higher data rate in benign channels
Libri sul tema "Ionospheric radio wave propagation"
Davies, Kenneth. Ionospheric radio. London, U.K: P. Peregrinus on behalf of the Institution of Electrical Engineers, 1989.
Cerca il testo completoM, Hall M. P., e Barclay L. W, a cura di. Radiowave propagation. London, United Kingdom: P. Peregrinus on behalf of the Institution of Electrical Engineers, 1989.
Cerca il testo completoW, Barclay L., e Institution of Electrical Engineers, a cura di. Propagation of radiowaves. 2a ed. London: Institution of Electrical Engineers, 2003.
Cerca il testo completoLavergnat, Jacques. Radio wave propagation: Principles and techniques. Chichester: John Wiley, 2000.
Cerca il testo completoA, Zherebt͡s︡ov G., Tashchilin A. V e Sibirskiĭ institut zemnogo magnetizma ionosfery i rasprostranenii͡a︡ radiovoln., a cura di. Fizika ionosfery i rasprostranenii͡a︡ radiovoln: Sbornik nauchnykh trudov. Moskva: Nauka, 1989.
Cerca il testo completoMcNamara, L. F. The ionosphere: Communications, surveillance, and direction finding. Malabar, Fla: Krieger Pub. Co., 1991.
Cerca il testo completoA, Zherebt͡s︡ov G., e Sibirskiĭ institut zemnogo magnetizma, ionosfery i rasprostranenii͡a︡ radiovoln., a cura di. Fizika ionosfery i rasprostranenii͡a︡ radiovoln: Sbornik nauchnykh trudov. Moskva: "Nauka", 1988.
Cerca il testo completoG, Gelʹberg M., Institut Kosmofizicheskikh issledovaniĭ i aėronomii (Akademii͡a︡ nauk SSSR) e Soveshchanie po probleme "Neodnorodnai͡a︡ struktura ionosfery" (7th : 1991? : I͡A︡kutsk, Russia?), a cura di. Neodnorodnai͡a︡ struktura ionosfery: Sbornik nauchnykh trudov. I͡A︡kutsk: I͡A︡kutskiĭ nauch. t͡s︡entr SO AN SSSR, 1991.
Cerca il testo completoG, Mizun I͡U. Ionosfera Zemli. Moskva: Izd-vo "Nauka", 1985.
Cerca il testo completoGurevich, Aleksandr Viktorovich. Long distance propagation of HF radio waves. Berlin: Springer-Verlag, 1985.
Cerca il testo completoCapitoli di libri sul tema "Ionospheric radio wave propagation"
Rawer, Karl. "Propagation of radio waves in a cold magnetoplasma". In Wave Propagation in the Ionosphere, 53–66. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-3665-7_7.
Testo completoLarsen, Trygve R. "Irregular Variations in the High Latitude Ionosphere and their Effects on Propagation". In ELF-VLF Radio Wave Propagation, 171–85. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-010-2265-1_14.
Testo completoRawer, Karl. "Refraction of radio waves in a plasma. Simplest case". In Wave Propagation in the Ionosphere, 7–18. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-3665-7_2.
Testo completoGurevich, Alexsandr V., e Elena E. Tsedilina. "Regularities of Very Long-Distance Radio Wave Propagation in the Ionosphere". In Physics and Chemistry in Space, 71–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70249-5_4.
Testo completoDorman, Lev I. "Air Ionization by CR, Influence on the Ionosphere and Radio Wave Propagation". In Astrophysics and Space Science Library, 541–72. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2113-8_12.
Testo completoPal, Sujay. "Remote Sensing of the Ignorosphere: Need for a Complete Earth-Ionosphere Radio Wave Propagation Model". In Astrophysics and Space Science Proceedings, 527–43. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94607-8_41.
Testo completoBasak, Tamal. "Quantitative Modeling of Lower Ionospheric Response Due to Solar X-ray Flare: A Propagating Radio Wave Simulation Approach". In Astrophysics and Space Science Proceedings, 561–70. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94607-8_43.
Testo completoAkinian, S. T., E. I. Mogilevskii e V. V. Fomichev. "Radio Astronomy Studies of the Sun at the Institute of Terrestrial Magnetism, the Ionosphere and Radio-Wave Propagation of the USSR Academy of Sciences". In A Brief History of Radio Astronomy in the USSR, 225–29. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2834-9_10.
Testo completoSmol’kov, G. Y. "The Birth and Development of Radio Astronomy Studies of the Sun at the Siberian Institute of Terrestrial Magnetism, the Ionosphere and Radio-Wave Propagation". In A Brief History of Radio Astronomy in the USSR, 231–36. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2834-9_11.
Testo completoCander, Ljiljana R. "Ionosphere Space Weather and Radio Propagation". In Ionospheric Space Weather, 197–243. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99331-7_8.
Testo completoAtti di convegni sul tema "Ionospheric radio wave propagation"
Bakhmet'eva, Natalia, Valery Vyakhirev, Elena Kalinina, Ilya Zhemyakov e Grigory Vinogradov. "Vertical Motions in the Lower Ionosphere and Dynamics of the Ionospheric Plasma". In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810386.
Testo completoDeminov, Marat G., e Rafael G. Deminov. "Geomagnetic Index for Intense Ionospheric Storm". In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810384.
Testo completoGuo, Qiang, Leonid F. Chernogor, Konstantin P. Garmash, Yiyang Luo, Victor T. Rozumenko e Yu Zheng. "Ionospheric Disturbances and Their Impacts on HF Radio Wave Propagation". In 2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS). IEEE, 2021. http://dx.doi.org/10.23919/ursigass51995.2021.9560548.
Testo completoMa Bao-Ke e Guo Li-Xin. "Study on scintillation of radio wave propagation through the ionospheric irregularities". In 2008 8th International Symposium on Antennas, Propagation & EM Theory (ISAPE - 2008). IEEE, 2008. http://dx.doi.org/10.1109/isape.2008.4735230.
Testo completoMaltseva, O. A., N. S. Mozhaeva, T. V. Nikitenko e T. T. Quang. "HF radio wave propagation in conditions of prolonged low solar activity". In 12th IET International Conference on Ionospheric Radio Systems and Techniques (IRST 2012). IET, 2012. http://dx.doi.org/10.1049/cp.2012.0402.
Testo completoRepin, Andrey, Mikhail Anishin, Boris Barabashov, Dmitry Demin, Valentina Denisova, Sergey Zhuravlev, Nadezhda Kotonayeva e Konstantin Tsybulya. "The Long- and Short-Term Ionospheric Forecast Service for the Shortwave Propagation". In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810196.
Testo completoRatovsky, Konstantin G., Maxim V. Klimenko, Yury V. Yasyukevich e Vladimir V. Klimenko. "Statistical Analysis of Ionospheric Global Electron Content Response to Geomagnetic Storms". In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810392.
Testo completoIvanova, V. A., V. I. Kurkin e V. A. Ivanov. "Peculiarities of the HF radio wave propagation over round-the-world paths". In IET 11th International Conference on Ionospheric Radio Systems and Techniques (IRST 2009). IEE, 2009. http://dx.doi.org/10.1049/cp.2009.0081.
Testo completoKhristoforov, Stanislav, e Vladimir Bochkarev. "Estimation of Geomagnetic and Solar Indices by Global Ionospheric Maps With Use of Neural Networks". In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810207.
Testo completoNguyen, Bach T., e Jamesina J. Simpson. "A stochastic FDTD model of electromagnetic wave propagation in magnetized ionospheric plasma". In 2013 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium). IEEE, 2013. http://dx.doi.org/10.1109/usnc-ursi.2013.6715363.
Testo completoRapporti di organizzazioni sul tema "Ionospheric radio wave propagation"
Tawk, Youssef, e Christopher Romero. Millimeter Wave Radio Frequency Propagation Model Development. Fort Belvoir, VA: Defense Technical Information Center, agosto 2014. http://dx.doi.org/10.21236/ada609960.
Testo completoKersley, L., S. E. Pryse e N. S. Wheadon. Radio-Wave Scintillations and Ionospheric Irregularities at High Latitudes. Fort Belvoir, VA: Defense Technical Information Center, maggio 1987. http://dx.doi.org/10.21236/ada192140.
Testo completoArgo, P. E., D. DeLapp, C. D. Sutherland e R. G. Farrer. Tracker: A three-dimensional raytracing program for ionospheric radio propagation. Office of Scientific and Technical Information (OSTI), dicembre 1994. http://dx.doi.org/10.2172/10196580.
Testo completoBarrios, A. E. Radio Wave Propagation in Horizontally Inhomogeneous Environments by Using the Parabolic Equation Method. Fort Belvoir, VA: Defense Technical Information Center, maggio 1991. http://dx.doi.org/10.21236/ada242082.
Testo completoHeinz, Brian J., David Richie, Song J. Park e Dale R. Shires. Real-Time Radio Wave Propagation for Mobile Ad-Hoc Network Emulation and Simulation Using General Purpose Graphics Processing Units (GPGPUs). Fort Belvoir, VA: Defense Technical Information Center, maggio 2014. http://dx.doi.org/10.21236/ada601670.
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