Determination of the orientation of ionospheric irregularities causing scintillation of signals from earth satellites

Chen, A.A.; Kent, G. S.

doi:10.1016/0021-9169(72)90197-3

Cited by 12 publications

(10 citation statements)

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“…Data obtained from spaced receiver measurements made at Kingston, Jamaica (during the periods August 1967-January 1969 and June 1970-September 1970) show that the irregularities between heights of 153 and 617 km causing the scintillation of signals from the moving earth satellites (BE-B and BE-C) are closely aligned along the magnetic field lines in the F -region [13]. The orientation of the irregularities in the ionosphere has been measured with respect to the geographic north observing a diffraction pattern of the satellite signals (41 MHz) on the ground.…”

Section: Anisotropic Gaussian and Power-law Correlation Functionsmentioning

confidence: 99%

Model Computations of Angular Power Spectra for Anisotropic Absorptive Turbulent Magnetized Plasma

Jandieri¹,

Ishimaru²,

Jandieri³

et al. 2007

PIER

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Abstract-Electromagnetic waves scattering in turbulent anisotropic collision magnetized ionospheric plasma is investigated using complex geometrical optics approximation.Correlation function of the phase fluctuations of scattered radiation is obtained taking into account both electron density and magnetic fields fluctuations. The features of the angular power spectrum of scattered radiation are investigated analytically and numerically. The expressions of broadening of the spatial spectrum have been obtained for both powerlaw and anisotropic Gaussian correlation functions of electron density fluctuations. Gaussian spectral function takes into account the axial ratio of the field-aligned irregularities and the angle of inclination of prolate irregularities with respect to the external magnetic field. The variance of the phase and scintillation level of scattered radiation are calculated numerically for F -region irregularities of the ionosphere. The conditions of non-fully and fully developed diffraction patterns have been determined.

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Section: Anisotropic Gaussian and Power-law Correlation Functionsmentioning

confidence: 99%

Model Computations of Angular Power Spectra for Anisotropic Absorptive Turbulent Magnetized Plasma

Jandieri¹,

Ishimaru²,

Jandieri³

et al. 2007

PIER

View full text Add to dashboard Cite

show abstract

“…Data obtained from spaced receiver measurements made at Kingston, Jamaica (during the periods August 1967-January 1969 and June 1970-September 1970) show that the irregularities between heights of 153 and 617 km causing the scintillation of signals from the moving earth satellites (BE-B and BE-C) are closely aligned along the magnetic field lines in the F -region [18]. Orientation of the irregularities in the ionosphere has been measured with respect to the geographic north observing a diffraction pattern of the satellite signals (41 MHz) on the ground.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Some Peculiarities of the Spatial Power Spectrum of Scattered Electromagnetic Waves in Randomly Inhomogeneous Magnetized Plasma With Electron Density and External Magnetic Field Fluctuations

Jandieri¹,

Ishimaru²

2013

PIER B

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Abstract-Statistical characteristics of multiply scattered electromagnetic waves in turbulent magnetized plasma with both electron density and external magnetic field fluctuations are considered. Analytical expression for phase fluctuations of scattered radiation is derived using the smooth perturbation method. Correlation and wave structure functions of the phase fluctuations, angle-of-arrivals are obtained for arbitrary correlation functions of fluctuating plasma parameters and external magnetic field taking into account the diffraction effects. The evolution of a double-peaked shape in the spatial power spectrum of scattered radiation is analyzed numerically for both anisotropic Gaussian and power-law spectra of electron density fluctuations using experimental data. Phase portraits of external magnetic field fluctuations have been constructed for different non-dimensional spatial parameters characterizing a given problem.

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“…The Data obtained from spaced receiver measurements made at Kingston, Jamaica (during the periods August 1967-January 1969 and June 1970-September 1970) show that the irregularities between heights of 153 and 617 km causing the scintillation of signals from the moving earth satellites (BE-B and BE-C) are closely aligned along the magnetic field lines in the F -region of the ionosphere [22]. The dip angle of the irregularities with respect to the field lines was within 16 • .…”

Section: Numerical Calculationsmentioning

confidence: 99%

Statistical Moments and Scintillation Level of Scattered Electromagnetic Waves in the Magnetized Plasma

Jandieri

Ishimaru

Rawat

et al. 2018

PIER C

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Statistical characteristics of scattered ordinary and extraordinary electromagnetic waves in the magnetized plasma are considered using the smooth perturbation method. Diffraction effects and polarization coefficients are taken into account. Second order statistical moments of scattered radiation are obtained for arbitrary correlation function of electron density fluctuations. The expressions of the broadening of the spatial power spectrum and displacement of its maximum are obtained. Wave structure functions and the angle of arrivals are calculated. Scintillation level of scattered radiation is analyzed for different parameters characterizing anisotropic plasma irregularities for the ionospheric F-region. Numerical calculations of the statistical characteristics are carried out for the three-dimensional spectral function containing anisotropic Gaussian and power-law spectral functions using the experimental data.

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Determination of the orientation of ionospheric irregularities causing scintillation of signals from earth satellites

Cited by 12 publications

References 0 publications

Model Computations of Angular Power Spectra for Anisotropic Absorptive Turbulent Magnetized Plasma

Model Computations of Angular Power Spectra for Anisotropic Absorptive Turbulent Magnetized Plasma

Some Peculiarities of the Spatial Power Spectrum of Scattered Electromagnetic Waves in Randomly Inhomogeneous Magnetized Plasma With Electron Density and External Magnetic Field Fluctuations

Statistical Moments and Scintillation Level of Scattered Electromagnetic Waves in the Magnetized Plasma

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