Propagation in a Superrefractive Troposphere With a Nontrapping Surface Layer

Gerks, Irvin H.

doi:10.1002/rds196833245

Cited by 2 publications

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“…The refractivity profile is of the same form as that used in an earlier paper [Gerks, 1968] The present results for 0.044 _< fi _< 0.100 were combined with earlier results for 0 _< B _< 0.03 [Gerks, 1968] The results agree well with those obtained by other methods. The implications with respect to transhorizon tropospheric propagation are well covered in the literature.…”

Section: Introductionsupporting

confidence: 83%

Propagation in a Superrefractive Troposphere with a Trapping Surface Layer

Gerks

1969

Radio Science

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The problem of UHF propagation is examined for the case of a spherically stratified troposphere having a profile of refractive modulus with a minimum near the surface of the earth. The methods of R. E. Langer are used to develop an asymptotic solution in terms of Whittaker functions, and eigenvalues are determined numerically with a fast computer. The results, which agree with those obtained earlier by other methods, are used to show how the distant field strength varies as the profile changes from a ‘normal’ case to a highly superrefractive case.

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Section: Introductionsupporting

confidence: 83%

Propagation in a Superrefractive Troposphere with a Trapping Surface Layer

Gerks

1969

Radio Science

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Long‐distance propagation in a stratified atmosphere with an even power n profile

Kawaguchi

1993

Electron. Comm. Jpn. Pt. I

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The propagation characteristics of the radio wave were analyzed in a nonuniform atmosphere in which there exist an inverted layer with an even power profile of a height under a standard atmosphere and the lowest layer with a linear profile. If the modified index of refraction obtained by introduction of the earth-flattening approximation has a 2n power profile of the height, the solution of the wave equation cannot be given by a closed form function. Hence, the rigorous solution was obtained by a series representation in accordance with the method by Frobenius. This series solution is found effective even if the wave equation has two turning points close to each other. The function value can be obtained within a time shorter than the one required for the numerical solution such as the one by the Runge-Kutta method.By continuation of the analytic solutions for each atmospheric model layer, the wave function was derived and the received electric field at a far distance was obtained by the mode theory. It was found that the received electric field depends strongly on the order n of the 2n-th power N profile as the atmospheric layer near the zero of the index of refraction slope is increased.

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Propagation in a Superrefractive Troposphere With a Nontrapping Surface Layer

Cited by 2 publications

References 6 publications

Propagation in a Superrefractive Troposphere with a Trapping Surface Layer

Propagation in a Superrefractive Troposphere with a Trapping Surface Layer

Long‐distance propagation in a stratified atmosphere with an even power n profile

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