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Wave Propagation in a Random Medium With Parabolic Background
Author(s) -
Liu C. H.
Publication year - 1967
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/rds196729961
Subject(s) - physics , electron density , ionosphere , computational physics , slab , wave propagation , electron , electromagnetic radiation , position (finance) , plasma , radio wave , probability density function , correlation function (quantum field theory) , function (biology) , dielectric , optics , geophysics , quantum mechanics , mathematics , statistics , finance , evolutionary biology , economics , biology
Wave propagation in a random medium with inhomogeneous background is studied. The medium is assumed to he charactenzed by a dielectric permittivity ε 0 ( x )+ε 1 ( x ) where ε 0 ( x ) is a function of space and ε,( x ) is a random function of position. With ionospheric propagation application in mind, the background medium is taken as an mhomogeneous plasma region with electron density varying as a function of z . A slab of random irregularities is assumed to be imbedded in the plasma. fluctuations and correlatiOn functions of spherical waves propagating through this medium are calculated using W.K.B. and pertubation techniques. They are compared with the results obtained for the case where the background medium is homogeneous. It is found that the corrections to the fluctuations due to the inhomogeneous background are maximum when the irregularity slab is at the peak of the electron density profile. From this result, it is believed that scintillations of radio signals from satellites are more easily observable when the irregularities are near the peak of the ionosphere electron density profile.