Power Spectrum in the Conductive Terrestrial Ionosphere

George Jandieri (International Space Agency Society Georgia, Tbilisi, 0184, Georgia)
Jaromir Pistora (International Space Agency Society Georgia, Tbilisi, 0184, Georgia)
Nino Mchedlishvili (International Space Agency Society Georgia, Tbilisi, 0184, Georgia)

Article ID: 1763

Abstract


Stochastic differential equation of the phase fluctuations is derived for the collision conductive magnetized plasma in the polar ionosphere applying the complex geometrical optics approximation. Calculating second order statistical moments it was shown that the contribution of the longitudinal conductivity substantially exceeds both Pedersen and Hall’s conductivities. Experimentally observing the broadening of the spatial power spectrum of scattered electromagnetic waves which equivalent to the brightness is analyzed for the elongated ionospheric irregularities. It was shown that the broadening of the spectrum and shift of its maximum in the plane of the location of an external magnetic field (main plane) less than in perpendicular plane for plasmonic structures having linear scale tenth of kilometer; and substantially depends on the penetration angle of an incident wave in the conductive collision turbulent magnetized ionospheric plasma. The angle-of-arrival (AOA) in the main plane has the asymmetric Gaussian form while in the perpendicular plane increases at small anisotropy factors and then tends to the saturation for the power-low spectrum characterizing electron density fluctuations. Longitudinal conductivity fluctuations increase the AOAs of scattered radiation than in magnetized plasma with permittivity fluctuations. Broadening of the temporal spectrum containing the drift velocity of elongated ionospheric irregularities in the polar ionosphere allows to solve the reverse problem restoring experimentally measured velocity of the plasma streams and characteristic linear scales of anisotropic irregularities in the terrestrial ionosphere.


Keywords


Ionosphere; Turbulence; Irregularities; Plasma; Scattering

Full Text:

PDF

References


[1] Ishimaru, A. Wave Propagation and Scattering in Random Media, Vol. 2, Multiple Scattering, Turbulence, Rough Surfaces and Remote Sensing, IEEE Press, Piscataway, New Jersey, USA, 1997.

[2] Rytov, S.M., Kravtsov, Yu.A., and Tatarskii, V.I., Principles of Statistical Radiophysics. vol.4. Waves Propagation Through Random Media. Berlin, New York, Springer, 1989.

[3] Jandieri, G.V., Ishimaru, A., Yasumoto, K., Khantadze, A.G., and Jandieri, V.G. Angle-of Arrival of Radio Waves Scattered by Turbulent Collisional Magnetized Plasma Layer, International Journal of Microwave and Optical Technology, 2009, 4: 160-169.

[4] Jandieri, G.V., Gavrilenko, V.G., Sorokin, A.V., and Jandieri, V.G. Some Peculiarities of the Angular Power Distribution of Electromagnetic Waves Multiply Scattered in a Collisional Magnetized Turbulent Plasma, Plasma Phyiscs Report. 2005, 31: 604-615.

[5] Aydoglu, M., and Ozcan, O., Effect of magnetic declination on refractive index and wave polarization coefficients of electromagnetic waves in mid-latitude ionosphere, Indian Journal of Radio and Space Physics, 1996, 25: 163-270.

[6] Jandieri, G.V., Ishimaru, A., Rawat, Banmali, and Mchedlishvili, N.I. Spatial power spectrum of scattered electromagnetic waves in the conductive anisotropic magnetized plasma, International Journal of Microwave and Optical Technology, 2019, 14: 440-449.

[7] Ginzburg, V.L. Propagation of Electromagnetic Waves in Plasma, Gordon and Beach, New York, 1961.

[8] Booker, H.G. Cold Plasma Waves, Martinus Nijhoff Publishers, Dordrecht-Boston-Lancaster, 1984.

[9] Jandieri, G.V., Ishimaru, A., Jandieri, V.G., Khantadze, A.G., and Diasamidze, Zh.M. Model computations of angular power spectra for anisotropic absorptive turbulent magnetized plasma, Progress in Electromagnetics Research, 2007, 70: 307-328.

[10] Evans J.V. (Ed) Millstone Hill Radar Propagation Study: Calibration, Technical Report. 508, Linkoln Lab., Mass. Inst. Of Technol.-Lexington, 1973.

[11] Kravtsov, Yu.A. Feizulin, Z.I. and A.G. Vinogradov, Penetration of Radio Waves Through the Terrestrial Atmosphere, Radio and Communication, Moscow, 1983 (in Russian).

[12] Singh, M. and Szuszczewicz, E.P. Composite equatorial spread F wave number spectra from medium to short wavelength, Journal of Geophysical Research, 1984, 89: 2313-2317.

[13] Jandieri, G., Ishimaru, A., Rawat, B., Kharshiladze, O, and Diasamidze Zh.M. Power spectra of ionos-pheric scintillation,Advances Electromagnetics,2017, 6:42-51.

[14] Frey, A., and Gordon, W.E. HF produced ionospheric electron density irregularities diagnosed by UHF radio star scintillations, Journal of Atmosphere and Terrestrial Physics, 1982, 44: 1101-1111.

[15] Fejer B.G., Farley, D.T. Gonzales, C.A. Woodman, R.F., and Calderon, C., F-region east-west drifts at Jicamarca, Journal of Geophysical Research, 1981, 86: 215-218.

[16] Kolosov, M.A., Armand, N.A. and Yakovlev, O.I. Propagation of Radio Waves at Cosmic communication, Moscow, Sviaz’ 1969 (in Russian).



DOI: https://doi.org/10.30564/jees.v2i1.1763

Refbacks

  • There are currently no refbacks.
Copyright © 2020 Author(s)


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.