Accession Number : AD0260272

Title :   RECIPROCITY OF REFLECTION COEFFICIENT FOR A SHARPLY BOUNDED IONOSPHERE

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : BIRMINGHAM,T.

Report Date : MAR 1960

Pagination or Media Count : 1

Abstract : Numerous studies were made of the reciprocity of very low frequency electromagnetic transmissions in the presence of an externally applied magnetic field, specifically the earth's magnetic field. This analysis examines very low frequency reflections from the ionosphere in the presence of a transverse magnetic field and shows that theoretically, in the case of east-west and west-east propagation in the presence of a transverse applied magnetic field, nonreciprocity of the reflection coefficient exists. Assuming that the reflection coefficient and attenuation factor are in inverse proportion, if west-east propagation has a higher reflectivity, its attenuation factor is correspondingly less. (Author)

Descriptors :   *ELECTROMAGNETIC RADIATION, *IONOSPHERIC PROPAGATION, *REFLECTION, *GEOMAGNETISM, IONOSPHERE, PERIODIC VARIATIONS, VERY LOW FREQUENCY, WAVE PROPAGATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE