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An Improved Method for the Calculation of the Field-strength of Waves Reflected by the Ionosphere

Nature volume 169, pages 147–148 (1952)Cite this article

Abstract

TEN years ago a method of calculating the field-strength of the sky wave was developed by one of us1. Apart from the well-known conditions for ionospheric reflexion, it takes account of three independent influences: geometrical optics of the reflecting layer, absorption in the D-layer and blanketing caused by the E- and Es-layers; in a later publication2 considerations of refraction occurring in the reflecting layer led to a slight modification of the analysis of the first influence2. The influence of the blanketing E- and Es-layers is only of interest for reflexions from the F-layer. Until now, this effect has been supposed to be a discontinuous one: a certain transmission path via the F-layer is assumed to be cut off by the E-layer, if, at the angle of transmission used, the frequency is inferior to the maximum usable frequency of the E-layer. If the frequency is greater, the ray will be assumed to pass.

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References

  1. Rawer, K., Deutsche Luftfahrtforschung FB. Nr. 1872 (1943). Later publications: Rev. Sci., 85, 361 (1947); Service Report SPIM—R7 (1948); Arch. Elek. Ubertragung, 5, 154 (1951).

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  2. Rawer, K., Rev. Sci., 86, 481 and 585 (1948); Nature, 166, 316 (1950).

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  4. Booker, H. G., Proc. Roy. Soc., A, 150, 267 (1935).

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  5. Argence, E., and Rawer, K., C.R. Acad. Sci., Paris, 229, 996 (1949). Argence, E., Mayot, M., and Rawer, K., Ann. Géophys., 6, 242 (1950).

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Authors and Affiliations

  1. Service de Prévision, Ionosphérique Militaire, Freiburg

    K. BIBL, K. RAWER & E. THEISSEN

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  1. K. BIBL
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  2. K. RAWER
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  3. E. THEISSEN
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BIBL, K., RAWER, K. & THEISSEN, E. An Improved Method for the Calculation of the Field-strength of Waves Reflected by the Ionosphere. Nature 169, 147–148 (1952). https://doi.org/10.1038/169147b0

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