Accession Number:

ADA046237

Title:

Effect of a Cylindrically-Symmetric Ionospheric Disturbance on ELF Propagation in the Earth-Ionosphere Waveguide.

Descriptive Note:

Topical rept.,

Corporate Author:

R AND D ASSOCIATES MARINA DEL REY CALIF

Personal Author(s):

Report Date:

1977-06-10

Pagination or Media Count:

39.0

Abstract:

A nuclear explosion in the earths ionosphere produces a depression in the ionosphere that is approximately cylindrically symmetric. In this paper, a method is developed for calculating the change in amplitude and phase at a receiver of an ELF extremely low frequency radio wave in the presence of such a localized, cylindrically-symmetric disturbance. Numerical results are obtained for the particular configuration where the center of the disturbance is directly above the transmitter-receiver path. The attenuation from one edge of the disturbance to the opposite edge is found to be only about half of that calculated by the two-dimensional WKB approximation usually employed in such problems.

Subject Categories:

  • Atmospheric Physics
  • Radiofrequency Wave Propagation
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE