Simulación de propagación decamétrica de ondas en el plasma ionosférico

• Kiryanova, Kseniya S. ^[1] ; Kryukovsky, Andrey S. ^[1] ; Lukin, Dmitry S. ^[2]
  1. [1] Russian New University

     Russian New University

     Rusia

     
  2. [2] Moscow Physical and Technical Institute , Head Chair of Physics and Mathematical Problems of Wave Processes
• Localización: Revista de Matemática: Teoría y Aplicaciones, ISSN 2215-3373, ISSN-e 2215-3373, Vol. 20, Nº. 1, 2013, págs. 21-34
• Idioma: español
• DOI: 10.15517/rmta.v20i1.8475
• Títulos paralelos:
  • Simulation of decametric wave propagation in the ionospheric plasma
• Enlaces
  • Texto completo (pdf)
• Resumen
  • español

    Se considera la propagación de radioondas decamétricas en elplasma ionosférico. Se usa un sistema bicaracteríıstico de ecuacionespara modelar las estructuras radiales. Este sistema, que permite en-contrar los caminos radiales con gran precisión, fueobtenido por D.S.Lukin. En los cálculos se usaron modelos de la ionosfera con gradi-entes horizontales; se tomaron en cuenta inhomogeneidades locales,tales como densidad reducida de electrones en la capa máxima y den-didad aumentada de electrones bajo la capa máxima. Se exploraroncaracterísticas de la propagación de las ondas cortas. Se muestra quelos rayos pueden ser expulsados del campo de distribución y hacerun bucle cuando chocan con la inhomogeneidad dela ionosfera. Seestudia la formación de superficies cáusticas y su dinámica. Tambiénse estudia la propagación de radioondas en la ionosfera de la Tierra.Los perfiles de esta ionosfera fueron dados al grupo liderado por elProfesor V.E. Kunitsyn por medio del método de radiotomografíabasado en observaciones reales. Se construyeron estructuras de rayosen el área de “anomalía ecuatorial”. Se consideraron que incluyen yque excluyen el efecto del campo magnético de la Tierra y la influ-encia de la anomalía ecuatorial. Se investigaron estructuras radiales en diferentes posiciones de la fuenta de la radiación, así como dife-rentes frecuencias operativas. Se desarrolló el modelo dinámico de lapropagación de los rayos.

  • English

    The decametric radiowaves propagation in the ionospheric plasmawas considered. Bicharacteristic system of equations was used in themodeling ray structures. This system, which allows finding the raypaths with great precision, was obtained by D.S. Lukin. Models ofthe ionosphere with horizontal gradients were used in the calcula-tions; local inhomogeneities, such as reduced electron density in themaximum layer and increased electron density below the maximumlayer, were taken into account. The features of shortwave propaga-tion, such as getting a wave of interlayer channel, distribution andout of it, reflection of waves from different ionospheric layers wereexplored. Was shown that the rays can be ejected from the field ofdistribution and curled when hit in the inhomogeneity of the iono-sphere. The formation of caustic surfaces and its dynamics werestudied. The radiowaves propagation in the Earth’s ionosphere wasstudied. This ionosphere profiles were restored the scientific groupled by Professor V.E. Kunitsyn by radiotomographymethod based onreal observations. Ray structures in the area of “equatorial anomaly”were built. The models, both including and excluding the effect ofEarth’s magnetic field and the influence of the equatorial anomalywere considered. Ray structures at the different positions of the ra-diation source, as well as different operating frequency, were investi-gated. Dynamic model of the ray’s propagation was developed.

• Referencias bibliográficas
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  • Kryukovsky A.S.; Lukin, D.S.; Rastyagaev, D.V. (2010) “Simulation of ray and the caustic structure of electromagnetic fields according by...
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  • Kryukovsky, A.S.; Kiryanova, K.S. (2011) “Dynamic modeling of radiowave propagation in the vicinity of the equatorial anomaly based on the...
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