Accession Number : AD0251074

Title :   SUBSURFACE PROPAGATION STUDIES

Descriptive Note : Technical rept.

Corporate Author : SPACE-GENERAL CORP EL MONTE CA

Report Date : 11 NOV 1960

Pagination or Media Count : 1

Abstract : The theory of electromagnetic waves originating from a subsurface source, radiator-to-medium coupling, noise environment in the subsurface communication, system parameters resulting from various system constraints and requirements, and the economic trade-offs of various design parameters in typical long-range subsurface communication systems are discussed. The effect of the ionospheric height, geo-electromagnetic parameters of the earth and ionosphere, effect of the depth of transmitter and receiver antennas below the earth's surface, radiation pattern and efficiency of a typical subsurface antenna, the effect of the ionospheric height, and various noise environments during summer and winter, daytime and nighttime are presented with the help of numerous graphs and illustrations. The results of the fundamental aspects of the subsurface communication system are summarized. (Author)

Descriptors :   *ANTENNA RADIATION PATTERNS, *COMMUNICATION AND RADIO SYSTEMS, *ELECTROMAGNETIC RADIATION, *PROPAGATION, GEOPHYSICS, INTERFERENCE, NOISE, SOURCES, TABLES(DATA), WAVE PROPAGATION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE