Accession Number : ADP006133

Title :   Random Propagation through the Longwave Channel,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Kelly, F. J. ; Rhoads, F. J.

Report Date : MAY 1987

Pagination or Media Count : 27

Abstract : The longwave propagation channel in the earth ionosphere waveguide has many characteristics of a random medium. The lower surface of the waveguide is sometimes rough or smooth depending on the propagation path considered. The ionospheric boundary is significantly perturbed by sudden events during both daytime and nighttime. The polar-arctic regions of the world evidence these effects in a striking manner and require different statistical treatment. Recent observation of longwave fields in the arctic will be described and their degree of agreement with statistical predictions displayed. (Author)

Descriptors :   *RADIO TRANSMISSION, *WAVEGUIDES, *IONOSPHERIC PROPAGATION, LOW FREQUENCY, SYMPOSIA.

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE