Accession Number : AD0654323

Title :   TRANSIENT WAVE PROPAGATION IN INHOMOGENEOUS IONIZED MEDIA,

Corporate Author : RYDBECK RESEARCH ASSOCIATES FJARAS (SWEDEN)

Personal Author(s) : Ronnang,B. O.

Report Date : AUG 1966

Pagination or Media Count : 87

Abstract : Transient wave responses of two different inhomogeneous ionized media - the exponential medium and the symmetrical Epstein layer - are studied. By means of the linearized wave equations exact expressions for the unit step wave responses are derived. In both cases they can be written in closed mathematical forms, namely as a Bessel function and a Legendre function respectively. The unit step modulated carrier responses, written as convolution integrals, are computed at different heights in the media and at different carrier frequencies, i.e. the variations of the electric field, the magnetic field and the energy flow are determined. This makes it possible to compare the exact signal envelopes with the earlier obtained approximate results. Futhermore the strong signal distortion at tunnel transmission through a thin symmetrical Epstein layer is studied in detail. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, *MATHEMATICAL ANALYSIS), SIGNALS, DISTORTION, WAVE PROPAGATION, INTEGRALS, BESSEL FUNCTIONS, ELECTRIC FIELDS, MAGNETIC FIELDS, SPECIAL FUNCTIONS(MATHEMATICAL), ENERGY

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE