Spectral effect of the density irregularities on the scintillation index of transionospheric signals

Ruthie Lyle, S. P. Kuo, Joe Huang

Research output: Contribution to journalConference articlepeer-review

Abstract

An alternative approach is used to investigate the ionospheric scintillation problem. The irregularities in the ionosphere is modeled by a set of sinusoidal fluctuations, with each fluctuation in the set having a finite uniform spectral distribution and a random phase. Thus the scattering process in the ionosphere is deterministic for each individual scattering event from a single group of finite spectral width sinusoidal density variation. A quasi-particle theory is introduced to analyze the scattering event. It treats the wave as a distribution of quasi-particles in the space described by a Wigner distribution function (WDF). Multiple scattering effects is an intrinsic feature of the transport equation of the WDF. It is manifested by the variations of the quasi-particles distribution caused by collisions of the quasi-particles with the density irregularities. In free space, diffraction effect on the perturbed signal as it propagates from the exit plane of the plasma layer to ground is included by using Fresnel theory. The random nature of the problem accounts for the received signal power spectrum calculated. This semi-deterministic approach can be applied for irregularities having spectral distributions relevant to the experimental observance.

Original languageEnglish (US)
Number of pages1
JournalIEEE International Conference on Plasma Science
StatePublished - 1996
EventProceedings of the 1996 IEEE International Conference on Plasma Science - Boston, MA, USA
Duration: Jun 3 1996Jun 5 1996

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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